Myers–Briggs: Personality Types Isabel Briggs Myers was a pioneer in the study of personality types. The personality types are broadly defined according to four main preferences. Do married couples choose similar or different personality types in their mates? The following data give an indication (Source: I. B. Myers and M. H.

McCaulley, A Guide to the Development and Use of the Myers–Briggs Type Indicators).

Similarities and Differences in a Random Sample of 375 Married Couples Number of Similar Preferences Number of Married Couples All four 34 Three 131 Two 124 One 71 None 15 Suppose that a married couple is selected at random.

(a) Use the data to estimate the probability that they will have 0, 1, 2, 3, or 4 personality preferences in common.

(b) Do the probabilities add up to 1? Why should they?

What is the sample space in this problem?

AppendixLO1