Mount Hillsdale Hospital has 4,000 patient files listed alphabetically in its computer system. The office manager wants to survey a statistical sample of these patients to determine how satisfied they were with service provided by the hospital. She plans to use a telephone survey of 100 patients.

a. Describe how you would attach identification numbers to the patient files; for example, how many digits (and which digits) would you use to indicate the first patient file?

b. Describe how you would obtain the first random number to begin a simple random sample method.

c. How many random digits would you need for each random number you selected?

d. Use Excel to generate the list of patients to be surveyed.