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Mathematics, 17.03.2020 05:05 ashiteru123
A manufacturer reported a sample mean = 22.0 g and a sample standard deviation = 2.5 g based on a sample of 20 of their products. They hope to design future quality control tests to satisfy several criteria: The calculated error for a sample set (the error is the difference between the true mean and mean of the sample set) does not exceed 2.0 g. To save money on those tests, they want to collect as few samples as possible. They want more than 90% of the confidence intervals they calculate to include the true mean. What value of n would you recommend for future tests?
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A manufacturer reported a sample mean = 22.0 g and a sample standard deviation = 2.5 g based on a sa...
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