USA Today (July 2, 2001) gave the following information regarding cell phone use for men and women:

a. Construct a relative frequency histogram for average number of minutes used per month for men. How would you describe the shape of this histogram?

b. Construct a relative frequency histogram for average number of minutes used per month for women. Is the distribution for average number of minutes used per month similar for men and women? Explain.

c. What proportion of men average less than 400 minutes per month?

d. Estimate the proportion of men that average less than 500 minutes per month.

e. Estimate the proportion of women that average 450 minutes or more per month.

Transcribed Image Text:

Average Number of Minutes Used per Month 0 to <200 200 to <400 400 to <600 600 to <800 Relative Frequency Men Women .56 .18 .10 .16 .61 .18 .13 .08