See attached

AVOVA Homework Week

5

– Show all work and save as a Word doc

1

. A research wishes to try three different techniques to lower stress levels of law enforcement personnel diagnosed with high blood pressure. The subjects are randomly assigned to three groups; the first group takes the medication, the second group exercises, and the third group follows a strict diet. After four weeks, the reduction in each person’s blood pressure is record. At a

9

5% significance level, test the claim that there is no difference among the means. The data are shown.

912

8

Medication |
Exercise |
Diet |
|||||

1 0 |
6 |
5 | |||||

1 2 |
8 |
9 | |||||

3 |
|||||||

15 |
0 | ||||||

13 |
2 |
4 |

What is the critical value?

Compute the test value.

Find the between group variance.

Find the within group variance.

Find the F test value.

Make the decision. [Remember if F is greater than the CV reject the null. If F is less than the CV accept the null].

2. A state employee wishes to see if there is a significant difference in the number of employees working at the DMV. The data are shown. At a 95% significance level, test the claim that there is no difference among the means. Can it be concluded that there is a significant difference in the average number of employees that work at the DMV?

10

1

12

1

1

0

9

1

1

11

Raleigh-Durham |
Greensboro |
Wayne County |
||||

7 |
1 | |||||

14 |
||||||

32 |
||||||

19 |
||||||

11 |
||||||

What is the critical value?

Compute the test value.

Find the between group variance.

Find the within group variance.

Find the F test value.

Make the decision. [Remember if F is greater than the CV reject the null. If F is less than the CV accept the null].