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. Construct a frequency distribution and a percentage distribution.

b. Construct a histogram and a percentage polygon.

c. Construct a cumulative percentage distribution and plot a cumulative percentage polygon (ogive).

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.