The data set below contains the amount that a sample of nine customers spent on lunch ($) at a fast-food restaurant. Complete parts (a) through (d) below.

4.29
5.86
6.48
7.48
7.54
8.55
8.44
9.88

a. Compute the mean and median

b. Compute the variance, standard deviation, range, and coefficient of variation

c. Are the data skewed? If so, how?

d. Based on the results of (a) through (c), what conclusions can be reached concerning the amount that customers spent forlunch?

The average cost is ?$

The average cost is$

The average scatter of cost around the mean is$

The difference between the highest cost and lowest cost is$