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  3. you are given the sample mean and the population s

You are given the sample mean and the population standard deviation. Use this information to construct...

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Statistics

You are given the sample mean and the population standarddeviation. Use this information to construct the​ 90% and​ 95%confidence intervals for the population mean. Interpret the resultsand compare the widths of the confidence intervals.

From a random sample of 48 business​ days, the mean closingprice of a certain stock was ​$106.06. Assume the populationstandard deviation is ​$11.45.

The​ 90% confidence interval is ( [ ], [ ] ).

Answer & Explanation Solved by verified expert
4.0 Ratings (707 Votes)
SolutionGiven that 10606 1145n 48a At 90 confidence level the z is 1 90 1 090 010 2 010 2    See Answer
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