a. What variable could be used to describe all five of the events shown in the

“Americans like their coffee!” graphic

(p. 269)?

b. Is the variable in part a discrete or continuous?

Why?

c. Are events x  0, 1, 2, . . . mutually exclusive?

Explain why or why not.

d. What characteristics of a circle graph make it appropriate for use with a probability distribution? Be specific.

e. Construct a circle graph depicting the information described in the graphic.

f. Express the information in the circle graph as a probability distribution.

g. Assuming the information on the circle graph represents the population, find the mean and standard deviation of the variable described in part a.

h. Draw a histogram to display the information in the graphic. Describe the histogram. Is it a normal distribution? Explain.

i. Locate the mean and standard deviation found in part g on the histogram drawn in part h.

j. Do the empirical and Chebyshev’s rules apply?

Justify your answer.