Question: Each scale on the NEO-PR Personality Inventory is scaled with a mean of 50 and a standard deviation of 10. Professor Jovial administers the NEO-PR

Each scale on the NEO-PR Personality Inventory is scaled with a mean of 50 and a standard deviation of 10. Professor Jovial administers the NEO-PR to a class of psychology majors (N = 30) and finds that the students’ average score on the Gregarious (extraversion) scale is 72. If psychology majors are really no different in gregariousness from the population at large, what is the probability that Professor Jovial’s students scored so high?

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