USA Today (May 9, 2006) published the accompanying average weekday circulation for the 6-month period ending March 31, 2006, for the top 20 newspapers in the country:

2,272,815 2,049,786 1,142,464 851,832 724,242 708,477 673,379 579,079 513,387 438,722 427,771 398,329 398,246 397,288 365,011 362,964 350,457 345,861 343,163 323,031

a. Do you think the mean or the median will be larger for this data set? Explain.

b. Compute the values of the mean and the median of this data set.

c. Of the mean and median, which does the best job of describing a typical value for this data set?

d. Explain why it would not be reasonable to generalize from this sample of 20 newspapers to the population of all daily newspapers in the United States.