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(16.19) A class survey in a large class for first-year college students asked, \"About how many...

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Basic Math

(16.19) A class survey in a large class for first-year collegestudents asked, \"About how many hours do you study in a typicalweek?\". The mean response of the 427 students was x¯¯¯ = 17 hours.Suppose that we know that the study time follows a Normaldistribution with standard deviation 8 hours in the population ofall first-year students at this university. What is the 99%confidence interval (±0.001) for the population mean? Confidenceinterval is from to hours.

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solutionGiven that 17 8n 427At 99 confidence level the z is 1    See Answer
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