36 simple multiple quiz due 5 hours

36 simple multiple quiz due 5 hours. Before you bid check the quiz first

SIMPLE QUIZ

QUESTION

1 Question to answer: At what time of the day is the body temperature highest? When is it lowest? How much difference is there? Are body temperatures between midnight and noon significantly different than body temperatures between noon and midnight? Task: Make a scatterdiagram, where “time of day” is the independent variable and “temperature” is the dependent variable. The lowest temperatur occurs at a time that is closest to 11 p.m. 2 p.m. 5 a.m. 8 a.m. 2 a.m. 5 p.m. 8 p.m. 11 a.m. 3 points Save Answer

QUESTION 2 Question to answer: At what time of the day is the body temperature highest? When is it lowest? How much difference is there? Are body temperatures between midnight and noon significantly different than body temperatures between noon and midnight? Task: Make a scatterdiagram, where “time of day” is the independent variable and “temperature” is the dependent variable. The highest temperature occurs at a time that is closest to 9:30 p.m. 12:30 p.m. 6:30 p.m. 12:30 a.m. 3:30 p.m. 9:30 a.m. 3:30 a.m. 6:30 a.m. 3 points Saved

QUESTION 3 Question to answer: At what time of the day is the body temperature highest? When is it lowest? How much difference is there? Are body temperatures between midnight and noon significantly different than body temperatures between noon and midnight? Task: How many degrees Fahrenheit is the range of the temperature variable? 3 points Save Answer

QUESTION 4 Question to answer: At what time of the day is the body temperature highest? When is it lowest? How much difference is there? Are body temperatures between midnight and noon significantly different than body temperatures between noon and midnight? Task: Make a boxplot that compares the a.m. temperatures to the p.m. temperatures. According to the comparative boxplots, which median is higher? a.m. can’t tell they are equal p.m. 3 points Save Answer

QUESTION 5 Question to answer: At what time of the day is the body temperature highest? When is it lowest? How much difference is there? Are body temperatures between midnight and noon significantly different than body temperatures between noon and midnight? Task: Of all the a.m. temperatures, the mean is , and of all the p.m. temperatures the mean is . (Hint: Use the “Analyze – Compare Means – Independent-Samples T Test” option.) 4 points Save Answer

QUESTION 6 Question to answer: At what time of the day is the body temperature highest? When is it lowest? How much difference is there? Are body temperatures between midnight and noon significantly different than body temperatures between noon and midnight? Task: To test whether body temperatures between midnight and noon differ significantly from temperatures between noon and midnight, which hypothesis test is appropriate? two-sample independent t-test two-sample paired t-test one-sample t test z-test chi-squared test 4 points Save Answer

QUESTION 7 Question to answer: At what time of the day is the body temperature highest? When is it lowest? How much difference is there? Are body temperatures between midnight and noon significantly different than body temperatures between noon and midnight? Task: Let μ1 = mean a.m. temperature, and let μ2 = mean p.m. temperature. Fill in the following information for the hypothesis test H0 : μ1 = μ2 vs. H1 : μ1 ≠ μ2. The test statistic equals (-8.959, -.4492, -2.54, -3, 0) The p-value is closest to what whole number? (0,.0501,.0509,.044) At a 5% significance level, we should conclude (a,b,c,d) a: the mean a.m. temperature is significantly different than the mean p.m. temperature b: the mean a.m. temperature is not significantly different than the mean p.m. temperature c: the mean a.m. temperature is significantly less than the mean p.m. temperature d: the mean a.m. temperature is not significantly less than the mean p.m. temperature 10 points Save Answer

QUESTION 8 Question to answer: At what time of the day does reaction time peak? When is it the worst? How much difference is there? Are reaction times between midnight and noon significantly different than reaction times between noon and midnight? Task: Make a scatterdiagram, where “time of day” is the independent variable and “sheep” is the dependent variable. The best reaction time occurs at a time that is closest to 8 p.m. 11 p.m. 2 a.m. 2 p.m. 8 a.m. 11 a.m. 5 p.m. 5 a.m. 2 points Save Answer

QUESTION 9 Question to answer: At what time of the day does reaction time peak? When is it the worst? How much difference is there? Are reaction times between midnight and noon significantly different than reaction times between noon and midnight? Task: Make a scatterdiagram, where “time of day” is the independent variable and “sheep” is the dependent variable. The worst reaction time occurs at a time that is closest to 4 p.m. 7 a.m. 1 a.m. 10 a.m. 10 p.m. 4 a.m. 1 p.m. 7 p.m. 2 points Save Answer

QUESTION 10 Question to answer: At what time of the day does reaction time peak? When is it the worst? How much difference is there? Are reaction times between midnight and noon significantly different than reaction times between noon and midnight? Task: Make a scatterdiagram, where “time of day” is the independent variable and “baseball” is the dependent variable. The best reaction time occurs at a time that is closest to 8 a.m. 5 a.m. 2 p.m. 2 a.m. 8 p.m. 11 a.m. 5 p.m. 11 p.m. 2 points Save Answer

QUESTION 11 Question to answer: At what time of the day does reaction time peak? When is it the worst? How much difference is there? Are reaction times between midnight and noon significantly different than reaction times between noon and midnight? Task: Make a scatterdiagram, where “time of day” is the independent variable and “baseball” is the dependent variable. The worst reaction time occurs at a time that is closest to 8 p.m. 8 a.m. 2 a.m. 5 p.m. 11 a.m. 5 a.m. 11 p.m. 2 p.m. 2 points Save Answer

QUESTION 12 Question to answer: At what time of the day does reaction time peak? When is it the worst? How much difference is there? Are reaction times between midnight and noon significantly different than reaction times between noon and midnight? Task: What is an appropriate summary of how the two reaction time tests compare with respect to the best and worst reaction times? Both tests conclude that reaction time is worst in the early morning, but they disagree about when reaction time is best. The two tests do not agree on when reaction time is best and worst. Both tests conclude that reaction time peaks in the late afternoon and is worst in the early morning. Both tests conclude that reaction time peaks in the late afternoon, but they disagree about when reaction time is worst. 2 points Save Answer

QUESTION 13 Question to answer: At what time of the day does reaction time peak? When is it the worst? How much difference is there? Are reaction times between midnight and noon significantly different than reaction times between noon and midnight? Task: Regarding “how much difference is there”, fill in the following blanks about the range and IQR of the sheep and baseball data sets. Write the letter that corresponds to the closest answer. a: 2.4 seconds b: 0.6 seconds c: 0.06 seconds d: 0.24 seconds range IQR sheep baseball Which of the following cautions is appropriate? a: Because the sheep data set has an “early penalty”, this data set contains significant outliers. Therefore we should measure variation using range instead of IQR. b: Because the sheep data set has an “early penalty”, this data set contains significant outliers. Therefore we should measure variation using IQR instead of range. c: Because the sheep data set has an “early penalty”, this data set contains significant outliers. Therefore neither the IQR nor the range are appropriate measures of variation. d: Both the IQR and the range are appropriate measures of variation in this context. 4 points Save Answer

QUESTION 14 Question to answer: At what time of the day does reaction time peak? When is it the worst? How much difference is there? Are reaction times between midnight and noon significantly different than reaction times between noon and midnight? Task: Make a comparative histogram of the sheep data, that compares the a.m. and p.m. reaction times. Which is the best summary? The centers of the a.m. and p.m. sheep reaction time distributions are drastically different. The distributions of both the a.m. and p.m. sheep reaction times are approximately symmetric. The distributions of both the a.m. and p.m. sheep reaction times are skewed left with upper outliers. The distributions of both the a.m. and p.m. sheep reaction times are skewed right with upper outliers. 3 points Save Answer

QUESTION 15 Question to answer: At what time of the day does reaction time peak? When is it the worst? How much difference is there? Are reaction times between midnight and noon significantly different than reaction times between noon and midnight? Task: Suppose we want to study μ1 − μ2 where μ1 is the mean a.m. baseball reaction time and μ2 is the mean p.m. baseball reaction time. Which SPSS option is most appropriate? [Analyze – Compare Means – Paired-Samples T Test] [Analyze – Compare Means – Means] [Analyze – Compare Means – Independent-Samples T Test] [Analyze – Compare Means – One-Sample T Test] 3 points Save Answer

QUESTION 16 Question to answer: At what time of the day does reaction time peak? When is it the worst? How much difference is there? Are reaction times between midnight and noon significantly different than reaction times between noon and midnight? Task: Make a 95% confidence interval for μ1 − μ2 where μ1 is the mean a.m. baseball reaction time and μ2 is the mean p.m. baseball reaction time. Which is the best conclusion? With 95% confidence, there is no significant difference between the mean a.m. baseball reaction time and the mean p.m. baseball reaction time. We are 95% confident that the mean p.m. baseball reaction time is between .02 seconds and .03 seconds faster than the mean a.m. baseball reaction time. Since 0 is not in the confidence interval, we cannot compare the mean a.m. and mean p.m. baseball reaction times with 95% confidence. We are 95% confident that the mean a.m. baseball reaction time is between .02 seconds and .03 seconds faster than the mean p.m. baseball reaction time. 3 points Save Answer

QUESTION 17 Question to answer: At what time of the day does reaction time peak? When is it the worst? How much difference is there? Are reaction times between midnight and noon significantly different than reaction times between noon and midnight? Task: Let μ1 = the mean a.m. baseball reaction time and let μ2 is the mean p.m. baseball reaction time. Fill in the following information for the hypothesis test H0 : μ1 = μ2 vs. H1 : μ1 ≠ μ2. The type of test statistic appropriate is (t, z, F, or c where c stands for χ2) The value of the test statistic is (0, 26.439, 7.147, .02502) The p-value is closest to what number? (0,.02502,.0035,.01815, .03190) At a 5% significance level, we should conclude (a,b,c,d) a: the mean a.m. baseball reaction time is significantly different than the mean p.m. baseball reaction time b: the mean a.m. baseball reaction time is not significantly different than the mean p.m. baseball reaction time c: the mean a.m. baseball reaction time is significantly less than the mean p.m. baseball reaction time d: the mean a.m. baseball reaction time is significantly greater than the mean p.m. baseball reaction time 7 points Save Answer

QUESTION 18 Question to answer: Is there a strong relationship between the reaction time measurements from the “Sheep Tranquilizer Game” and the “Hit the Baseball Test”? Task: Compute the medians and IQRs of the Sheep and Baseball data. If “center” is measured by median and “variation” is measured by “IQR”, which answer is best? The sheep distribution is centered lower, and has slightly less variation. The sheep distribution is centered higher, and has slightly more variation. The sheep distribution is centered higher, but has slightly less variation. The sheep distribution is centered lower, but has slightly more variation. 5 points Save Answer

QUESTION 19 Question to answer: Is there a strong relationship between the reaction time measurements from the “Sheep Tranquilizer Game” and the “Hit the Baseball Test”? Task: Make a scatterplot whose independent variable is “baseball_not_high” and whose dependent variable is “sheep_not_high”. (We are not using the original baseball and sheep variables because we don’t want to analyze the extremely high values due to the sheep penalty that is part of that reaction time test.) Include the least-squares line with the scatterplot. The correlation coefficient is closest to .62 .38 .69 .1 .14 5 points Save Answer

QUESTION 20 Question to answer: Is there a strong relationship between the reaction time measurements from the “Sheep Tranquilizer Game” and the “Hit the Baseball Test”? Task: Make a scatterplot whose independent variable is “baseball_not_high” and whose dependent variable is “sheep_not_high”. (We are not using the original baseball and sheep variables because we don’t want to analyze the extremely high values due to the sheep penalty that is part of that reaction time test.) Include the least-squares line with the scatterplot. Which of the following conclusions is appropriate? At a certain time, if someone has a baseball reaction time of .3 seconds, we predict that their sheep reaction time would be .307 seconds. At a certain time, if someone has a sheep reaction time of .3 seconds, we predict that their baseball reaction time would be .307 seconds. At a certain time, if someone has a baseball reaction time of 1.3 seconds, we predict that their sheep reaction time would be .997 seconds. At a certain time, if someone has a sheep reaction time of 1.3 seconds, we predict that their baseball reaction time would be .997 seconds. 5 points Save Answer

QUESTION 21 Question to answer: Is there a strong relationship between the reaction time measurements from the “Sheep Tranquilizer Game” and the “Hit the Baseball Test”? Task: Make a scatterplot whose independent variable is “baseball_not_high” and whose dependent variable is “sheep_not_high”. (We are not using the original baseball and sheep variables because we don’t want to analyze the extremely high values due to the sheep penalty that is part of that reaction time test.) Include the least-squares line with the scatterplot. Which of the following is an interpretation of the slope of the least-squares line? If the baseball time increases by .1 seconds, we predict the sheep time will increase by .069 seconds. If the baseball time increases by .1 seconds, we predict the sheep time will increase by 1 second. If the sheep time increases by .1 seconds, we predict the baseball time will increase by 1 second. If the sheep time increases by .1 seconds, we predict the baseball time will increase by .069 seconds. 5 points Save Answer

QUESTION 22 Question to answer: Is there a strong relationship between the reaction time measurements from the “Sheep Tranquilizer Game” and the “Hit the Baseball Test”? Task: Make comparative boxplots for the “sheep_not_high” and “baseball_not_high” variables. Double click on the graph and select [Options – Show Gridlines – Both major and minor ticks ] Which of the following statements can you use the boxplots to conclude? (Select all correct answers.) The sheep median is slower than the baseball median. Approximately 25% of the sheep data is slower than .3 seconds. Disregarding outliers, all sheep and baseball data is between .2 and .4 seconds. More than 75% of the baseball data is quicker than .3 seconds. More sheep data takes longer than .2 seconds than baseball data. More sheep data takes longer than .25 seconds than baseball data. 10 points Save Answer

QUESTION 23 Question to answer: On average, is the human body temperate 98.6 degrees Fahrenheit? Task: Make a dotplot of the temperature data. Which statement is true? The temperature distribution is symmetric. The temperature distribution is uniform. The temperature distribution is skewed right. The temperature distribution is skewed left. 4 points Save Answer

QUESTION 24 Question to answer: On average, is the human body temperate 98.6 degrees Fahrenheit? Task: Which of the following measures of center of the temperature data are less than 98.6? Select all correct answers. mean mode median All three measures of center (mean, median, mode) are at least 98.6. 4 points Save Answer QUESTION 25 Question to answer: On average, is the human body temperate 98.6 degrees Fahrenheit? Task: Make a boxplot of the temperature data. (Add gridlines to the boxplot.) Which of the following can be concluded based on this boxplot? Select all correct answers. 98% of the temperatures are less than 99.5 degrees Fahrenheit. The temperature data has both upper and lower outliers. More than 75% of the temperature data is less 98.5 degrees Fahrenheit. More temperatures are less than 98 degrees Fahrenheit than greater than 98 degrees Fahrenheit 4 points Save Answer

QUESTION

26 Question to answer: On average, is the human body temperature 98.6 degrees Fahrenheit? Task: Let μ = the mean temperature. Which SPSS option is most appropriate for the hypothesis test H0 : μ = 98.6 vs. H1 : μ ≠ 98.6 ? [Analyze – Compare Means – Paired-Samples T Test] [Analyze – Compare Means – Independent-Samples T Test] [Analyze – Compare Means – One-Sample T Test] [Analyze – Compare Means – One-Way Anova] 4 points Save Answer

QUESTION 27 Question to answer: On average, is the human body temperature (measured orally) equal to 98.6 degrees Fahrenheit. Task: Make a 95% confidence interval for the mean temperature. With this confidence interval, which of the following conclusions can be made? Select all answers that apply. 95% of all oral temperatures are between 97.7 and 97.8 degrees Fahrenheit. We are 95% confident that the mean oral temperature is between 97.7 and 97.8 degrees Fahrenheit. We are 95% confident that the mean oral temperature is significantly different than 98.6 degrees Fahrenheit. This confidence interval does not help us know whether or not on average, the mean oral human body temperature is close to 98.6 degrees Fahrenheit. 6 points Save Answer

QUESTION 28 Question to answer: On average, is the human body temperature equal to 98.6 degrees Fahrenheit. Task: Let μ = the mean temperature. Fill in the following information for the hypothesis test H0 : μ = 98.6 vs. H1 : μ ≠ 98.6. The type of test statistic appropriate is (t, z, F, or c where c stands for χ2) The value of the test statistic is (0, -32.769, -.8412, .0257, 97.759) The p-value is closest to what whole number? (0, -32.769, -.8412, .0257, 97.759) At a 5% significance level, we should conclude (a,b,c,d) a: The mean oral temperature is not significantly different than 98.6. b: The mean oral temperature is significantly different than 98.6. c: The mean oral temperature is significantly less than 98.6. d: The mean oral temperature is not significantly less than 98.6. 8 points Save Answer

QUESTION 29 Question to answer: Is there a relationship between gender and reaction time? Task: Make a comparative histogram of the Baseball reaction time data, separated by gender. Use the comparative histograms to answer f (for female) or m (for male) in each blank. Which gender’s reaction time distribution has the highest measure of center? Which gender’s reaction time distribution has the highest measure of variation? One of these distributions has a standard deviation of .26 seconds, and one has a standard deviation of .25 seconds. Which one has a standard deviation of .25 seconds? A general answer to the question “Is there a relationship between gender and reaction time?” is that the gender with the slower reaction times, when measured by the baseball data is . 4 points Save Answer

QUESTION 30 Question to answer: Is there a relationship between gender and reaction time? Task: To analyze the how the sheep reaction time data compares between the genders, which type of graphs would make sense to make? Select all possible answers. comparative stem-and-leaf plots comparative pie graphs comparative histograms scatterplot comparative boxplots 4 points Save Answer QUESTION 31 Question to answer: Is there a relationship between gender and reaction time? Task: Suppose we want to study μ1 − μ2 where μ1 is the mean female baseball reaction time and μ2 is the mean male baseball reaction time. Which SPSS option is most appropriate? [Analyze – Compare Means – Means] [Analyze – Compare Means – Paired-Samples T Test] [Analyze – Compare Means – Independent-Samples T Test] [Analyze – Compare Means – One-Sample T Test] 6 points Save Answer QUESTION 32 Question to answer: Is there a relationship between gender and reaction time? Task: Make a 95% confidence interval for μ1 − μ2 where μ1 is the mean female baseball reaction time and μ2 is the mean male baseball reaction time. Which choices is are correct interpretation of the confidence interval? Select the two correct answers. We are 95% confident that females are between .02 seconds and .04 seconds faster than males on the baseball reaction time test. Since 0 is contained in the 95% confidence interval, we can conclude (at a 5% significance level) that the mean female and mean male baseball reaction times are significantly different. Since 0 is not contained in the 95% confidence interval, we can conclude (at a 5% significance level) that the mean female and mean male baseball reaction times are significantly different. We are 95% confident that females are between .004 seconds and .02 seconds slower than males on the baseball reaction time test. Since 0 is not contained in the 95% confidence interval, we can conclude (at a 5% significance level) that the mean female and mean male baseball reaction times are not significantly different. We are 95% confident that females are between .004 seconds and .02 seconds faster than males on the baseball reaction time test. We are 95% confident that females are between .02 seconds and .04 seconds slower than males on the baseball reaction time test. Since 0 is contained in the 95% confidence interval, we can conclude (at a 5% significance level) that the mean female and mean male baseball reaction times are not significantly different. 6 points Save Answer

QUESTION 33 Question to answer: Is there a relationship between gender and reaction time? Task: Let μ1 = the mean female baseball reaction time and let μ2 is the mean male baseball reaction time. Fill in the following information for the hypothesis test H0 : μ1 = μ2 vs. H1 : μ1 ≠ μ2. The type of test statistic appropriate is (t, z, F, or c where c stands for χ2) The value of the test statistic is (27.139, 0, 3.325, .001, .01083) The p-value is closest to what number? (27.139, 0, 3.325, .001, .01083) At a 5% significance level, we should conclude (a,b,c,d) a: the mean female baseball reaction time is significantly greater than the mean male basseball reaction time b: the mean female baseball reaction time is not significantly different than the mean male basseball reaction time c: the mean female baseball reaction time is significantly less than the mean male baseball reaction time d: the mean female baseball reaction time is significantly different than the mean male baseball reaction time 10 points Save Answer

QUESTION 34 Question to answer: Are the variables “age” and “reaction time” independent? Task: You have already created an “old_medium_young” variable. Conduct a hypothesis test whose null hypothesis is H0 : μold = μmedium =μyoung , where μold, μmedium, μyoung are the mean baseball reaction times for the old, medium, and young age groups, respectively. The type of test statistic appropriate is (t, z, F, or c where c stands for χ2) The value of the test statistic is (.002, 0, 2.803, .003, .316, .729) The p-value is closest to what number? (.002, 0, 2.803, .003, .316, .729) At a 5% significance level, we should conclude (a,b,c,d) a: There is a significant difference between all of the age groups’ mean baseball reaction times. b: There is no significant difference in the mean baseball reaction times among the old, medium, and young age groups. c: There is a significant difference between at least two of the age groups’ mean baseball reaction times. d: This test is inconclusive. 10 points Save Answer

QUESTION 35 Question to answer: Are the variables “age” and “reaction time” independent? Task: You have already created an “baseball_fast_medium_slow” variable. Conduct a hypothesis test whose null hypothesis is H0 : μfast = μmedium =μslow , where μfast, μmedium, μslow are the mean ages for the fast, medium, and slow baseball reaction time groups, respectively. The type of test statistic appropriate is (t, z, F, or c where c stands for χ2) The value of the test statistic is (255.246, 2, 252.432, .506, .603, .443) The p-value is closest to what number? (255.246, 2, 252.432, .506, .603, .443) At a 5% significance level, we should conclude (a,b,c,d) a: There is a significant difference in the mean ages of the fast, medium and slow baseball reaction time groups. b: There is a significant difference in the mean ages of the fast and slow baseball reaction time groups. c: There is a significant difference in the mean ages of the fast and medium baseball reaction time groups. d: There is no significant difference in the mean ages of the fast, medium and slow baseball reaction time groups. Should you conduct an ANOVA post hoc test? (y, n) 10 points Save Answer

QUESTION 36 Question to answer: Are the variables “age” and “reaction time” independent? Task: You have already created a “baseball_fast_medium_slow” variable, and a old_medium_young variable. Conduct a hypothesis test to determine if this categorical baseball reaction time variable and this categorical age variable are independent or not. What is the correct null hypothesis? a: The baseball_fast_medium_slow variable and the old_medium_young variable are independent. b: The baseball_fast_medium_slow variable and the old_medium_young variable are dependent. The type of test statistic appropriate is (t, z, F, or c where c stands for χ2) How many degrees of freedom are there? The value of the test statistic is (0, 4, .089, 1, 2.888, 25.667, 25.986) The p-value is closest to what number? (0, 4, .089, 1, 2.888, 25.667, 25.986) At a 5% significance level, we should conclude (a,b,c) a: The baseball_fast_medium_slow variable and the old_medium_young variable are independent. b: The baseball_fast_medium_slow variable and the old_medium_young variable are dependent. c: This test is inconclusive.