Refer to Exercise 4.93. A female physician in the United States whose specialty is one of those shown in the table is selected at random.
a. Use the letters in the margins of the contingency table to represent each of the following three events: The physician obtained is (i) an internist, (ii) 45 or over, and (iii) in family medicine and under 35.
b. Compute the probability of each event in part (a).
c. Construct a joint percentage distribution, a table similar to a joint probability distribution except with percentages instead of probabilities.

Data from exercise 4.93

Characteristics of physicians are collected and recorded by the American Medical Association in Physician Characteristics and Distribution in the US. The preceding table is a contingency table for female physicians in the United States, cross-classified by age and selected specialty. For the female physicians in the United States whose specialty is one of those shown in the table,

Transcribed Image Text:

Age (yr) 45 or over Under 35 35-44 A1 A2 Аз Total Family medicine 7,104 10,798 10,684 28,586 SI Internal 49,244 medicine 13,376 S2 Obstetrics/ gynecology S3 4,815 6,482 Pediatrics 10,656 13,024 15,748 39,428 S4 Total 35,951 52,679 135,778 Specialty