SOLUTION: A survey was conducted that asked 1077 people how many books they had read in the past year. Results indicated that x = 15.5 books and s = 17.8 books. Construct a 96% confidence
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Question 1137905: A survey was conducted that asked 1077 people how many books they had read in the past year. Results indicated that x = 15.5 books and s = 17.8 books. Construct a 96% confidence interval for the mean number of books people read. Interpret the interval.
Construct a 96% confidence interval for the mean number of books people read and interpret the result. Select the correct choice below and fill in the answer boxes to complete your choice.
(Use ascending order. Round to two decimal places as needed.)
A.
There is a 96% chance that the true mean number of books read is between
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B.
If repeated samples are taken, 96% of them will have a sample mean between
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C.
There is 96% confidence that the population mean number of books read is between...Blank and Blank Answer by rothauserc(4718) (Show Source):
You can put this solution on YOUR website! standard error(SE) = 17.8/square root(1077) = 0.5424
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alpha(a) = 1 - (96/100) = 0.04
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critical probability(p*) = 1 -(a/2) = 0.98
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critical value(CV) is the z-score associated with p*
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CV = 2.05
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Margin of Error(ME) = CV * SE
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ME = 2.05 * 0.5424 = 1.1119 is approximately 1.11
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The 96% confidence interval is 15.5 + or - 1.11, which is (14.39, 16.61)
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A 96% confidence interval means that we expect that 96% of interval estimates to include the population mean
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Answer is C.