Elements of Statistics–FHSU Virtual College- Problem Set for Unit 1 and Unit 2 (Total 48 questions)

Sample questions:

 

1.

 

a.

b.

c.

d.

e.

f.

In each of the following, classify the resulting data variable as qualitative or as quantitative.  If quantitative, label as discrete or as continuous.

The number of students enrolled in MATH 250.

The height of a randomly selected person.

The favorite color of students enrolled in MATH 250.

The high temperature outside today.

The number of days in this month.

The length of the room you are currently sitting in.

 

   

11.	The number of hours worked by 24 FHSU students over the course of one week is given in the table at the right.  Create a reasonable frequency table for this data set with exactly six classes.  Include a relative frequency column in the table.

 

7.

 

With regards to a standard normal distribution complete the following:
(a)	Find  P(z > 0), the proportion of the standard normal distribution above the z-score of 0.

 

  

13.	Suppose that a 95% confidence interval for a population mean μ is constructed from a sample, resulting in the interval from 550 to 650.  What was the value of the sample mean that was collected?  What was the size of the margin of error?