One of the major measures of the quality of service provided by a hospital is the speed with which it attends to its emergency room patients. The file ER contains a random sample of waiting times of 70 patients in emergency rooms at various hospitals across Eastern Europe.

a. Compute the mean, median, first quartile, and third quartile.

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

c. Construct a boxplot. Are the data skewed? If so, how?

d. On the basis of the results of (a) through (c), if you had to tell the CEO of a hospital in Eastern Europe how long a patient at the emergency room should expect to wait, what would you say? Explain.