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  3. the cost of spare parts per machine are normally d

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

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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 Round your answer to THREE decimal places ZO 10 1 282 ZO 05 1 645 20 025 1 960 20 01 2 326 20 005 2 576

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