The U.S. Department of Transportation reported the number of speeding-related crash fatalities for the 20 days of the year that had the highest number of these fatalities between 1994 and 2003 (Traffic Safety Facts, July 2005).
a. Compute the mean number of speeding-related fatalities for these 20 days.
b. Compute the median number of speeding-related fatalities for these 20 days.
c. Explain why it is not reasonable to generalize from this sample of 20 days to the other 345 days of the year.