Question: Problem 6

Focus Problem. Personality types

We now have research tools to solve the Chapter Focus Problem. In the book A Guide to the Development and Use of Myers-Briggs Type indicators, by Myers and McCually, it was reported that about 45% of all university professors are extroverted. Suppose you have classes with 6 different professors.

A) What is the probability that all six are extrovert?

B) What is the probability none of them are extrovert?

C) What is the probability that at least two of them are extroverts?

D) In a group of six professors selected at random, what is the expected number of extroverts?

What is the standard deviation of the distribution?