Isabel Myers was a pioneer in the study of personality types. Ina random sample of 62
professional actors, it was found that 39 were extroverts.
(a) Let p represent the proportion of all actors who areextroverts, Find the point estimate for p.
(b) Find a 95% conï¬dence interval for the p. Give a briefinterpretation of the meaning of the
confidence interval you have found.
(c) Do you think the conditions np greater than 5 and nq greaterthan 5 are satisfied in this problem? Explain why this
would be an important consideration.
