Mathematics, 11.02.2021 22:40 graciemccain
A.
A physician with a practice is currently serving 300 patients. The physician would like to administer a survey to his patients to measure their satisfaction level with his practice. A random sample of 25 patients had an average satisfaction score of 8.1 on a scale of 1-10. The sample standard deviation was 1.8.
Construct a 99% confidence interval to estimate the average satisfaction score for the physician's practice. The 99% confidence interval to estimate the average satisfaction score is? (_,_) What assumption needs to be made for this analysis?
B.
A university would like to estimate the proportion of fans who purchase concessions at the first basketball game of the season. The basketball facility has a capacity of 3,600 and is routinely sold out. It was discovered that a total of 210 fans out of a random sample of 500 purchased concessions during the game. Construct a 95% confidence interval to estimate the proportion of fans who purchased concessions during the game.
The 95% confidence interval to estimate the proportion of fans who purchased concessions during the game is (_,_)
C.
Construct a 95% confidence interval to estimate the population proportion using the data below.
x=29
n=95
N=500
The 95% confidence interval for the population proportion is (_,_)
Answers: 2
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A.
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