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Find the lower bound of the 95 confidence interval for the

A company has developed a new type of light bulb, and wants to estimate its mean lifetime. A simple random sample of 12 bulbs had a sample mean lifetime of 833 hours with a sample standard deviation of 28 hours. It is reasonable to believe that the population is approximately normal. Find the lower bound of the 95% confidence interval for the population mean lifetime of all bulbs manufactured by this new process. Round to the nearest integer.

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HR Management: Find the lower bound of the 95 confidence interval for the

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HR Management: Find the lower bound of the 95 confidence interval for the

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