Mathematics, 27.10.2020 18:10, Schoolworkspace453

The cost of spare parts per machine are normally distributed with a population standard deviation of 158 dollars and an unknown population mean. If a random sample of 23 machines is taken and results in a sample mean of 1790 dollars, find the error bound (EBM) of the confidence interval with a 98% confidence level

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The cost of spare parts per machine are normally distributed with a population standard deviation of...