Question

UVA wants to estimate the average number of hours students spend studying on campus each week....

UVA wants to estimate the average number of hours students spend studying on campus each week. They sample 54 students. This sample showed an average of 15.4 hours per week with a standard deviation for the sample of 9.2 hours. They want a 90% confidence interval

a) what is the 90% confidence interval? (give the interval, 3 decimal places)

b) what is the margin of error? (give the interval, 3 decimal places)

c) write a sentence summarizing the meaning of the confidence interval in terms of the true mean number of hours UVA students spend studying per week.

Math   Statistics-And-Probability   
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Answer #1

C)the meaning of the confidence interval- the true mean number of hours UVA students spend studying per week has a 90% chance of being between 13.34 and 17.459

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