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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

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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 63 professional actors, it was found that 38 were extroverts. A button hyperlink to the SALT program that reads: Use SALT. (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.) Incorrect: Your answer is incorrect. (b) Find a 95% confidence interval for p. (Round your answers to two decimal places.) lower limit Incorrect: Your answer is incorrect. upper limit Incorrect: Your answer is incorrect.

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Mathematics
5 months
2021-08-21T22:49:41+00:00
2021-08-21T22:49:41+00:00 1 Answers
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## Answers ( )

Answer:a)0.6032b)Lower limit: 0.48

Upper limit: 0.72

Step-by-step explanation:In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of , we have the following

confidence interval of proportions.In whichz is the zscore that has a pvalue of .

Question a:In a random sample of 63 professional actors, it was found that 38 were extroverts.We use this to find the sample proportion, which is the point estimate for p. So

Question b:Sample of 63 means that

95% confidence level

So , z is the value of Z that has a pvalue of , so .

The lower limit of this interval is:The upper limit of this interval is:Rounding to two decimal places:

Lower limit: 0.48

Upper limit: 0.72