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In a random sample of 68 professional actors, it was found that 40 were extroverts. (a) Let p represent the proportion of all actors who

In a random sample of 68 professional actors, it was found that 40 were extroverts.

(a) Let p represent the proportion of all actors who are extroverts. Find a point estimate for p. (Round your answer to four decimal places.)

(b) Find a 95% confidence interval for p. (Round your answers to two decimal places.)

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