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store takes a random sample of 25 sales. The average price for this sample is $310 with a standard deviation of $48. Assume that sales
store takes a random sample of 25 sales. The average price for this sample is $310 with a standard deviation of $48. Assume that sales are distributed normally.
- Please test the hypothesis when the sample mean is different from $300.
- Please test the hypothesis when the sample mean is greater than $300.
- Construct a 95% confidence interval for the population mean.
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Complex Analysis
Authors: Joseph Bak, Donald J Newman
3rd Edition
1441972889, 9781441972880
