A study examined waiting times in the X-ray department for a hospital in Jacksonville, Florida. A clerk recorded the number of patients waiting for service at 9:00 A.M. on 20 consecutive days and obtained the following results.

Number Waiting          Number of Days Outcome Occurred
         0                                             2
         1                                             5
         2                                             6
         3                                             4
         4                                             3

                                               Total 20

a. Define the experiment the clerk conducted.

b. List the experimental outcomes.

c. Assign probabilities to the experimental outcomes.

d. What method did you use?