Question
Asked Oct 30, 2019
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For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding.

In a random sample of 65 professional actors, it was found that 39 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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Expert Answer

Step 1

It is given that 39 are extroverts out of 65 professional actors.

Step 2

a)

The point estimate for p is 0.6000 (=39/65).

b)

The 95% confidence ...

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CI pt n f0.6000 x (1-0.6000) 0.6000 0.05 65 0.6000 x (1-0.6000) (. Using standard nomal table =0.6000 1.96, 65 (0.48,0.72)

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MathStatistics

Advanced Topics in Statistics

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