The numbers of personal phone calls received in the last three ...

[natalie2426]

The numbers of personal phone calls received in the last three days by a new employee were 2, 6, and 8. Assume that samples of size 2 are randomly selected with replacement from this population of three values.
 
  List the 9 different possible samples and find the mean of each sample. Find the sampling distribution of means.

Question 2

If the appropriate measure of central tendency is the mean, then the most appropriate measure of variability is the .
 
  a. median
  b. range
  c. standard deviation
  d. population variance

[blakeserpa]

Answer to Question 1

Possible samples: 2-2; 2-6; 2-8; 6-2; 6-6; 6-8; 8-2; 8-6; 8-8
Means: 2, 4, 5, 4, 6, 7, 5, 7, 8

The sampling distribution of means is:

Answer to Question 2

C

[natalie2426]

Gracias!

[cdmart10]

Excellent