The next two questions refer to the following table where

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Question: Suppose that a population has μ = 50 and σ= 10.

a) What is the Z value for x = 75?

b) What is the Z value for x = 40?

The next two questions refer to the following table where x= the number of days per week that 100 clients use a particular exercise facility.

X (# of days)

Frequency (# of people)

Cumulative Frequency

0

3

 

1

12

 

2

33

 

3

28

 

4

11

 

5

9

 

6

4

 

a. Complete the column of cumulative frequency

b. What is the 80th percentile?

c. Find the interquartile range.

d. Find the mean and standard deviation

Reference no: EM13577170

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