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99% confidence interval for mean.
The mean daily sales at the Stop and Go are $20,000 for a sample of 40 days. The standard deviation of the sample is $3,000.
What is the 99 percent confidence interval?
Interpret your findings.
Statistics and Probability, Statistics
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These are pretty similar: The population standard deviation of the number of people who shop online is 3.1. If you want to be 99% confident that the sample mean is within 2% of the population mean, how many people must b ...
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