Question: Based on a sample of repair records, an engineer calculates a 95% confidence interval for the mean cost to repair a fiber-optic component to be

Based on a sample of repair records, an engineer calculates a 95% confidence interval for the mean cost to repair a fiber-optic component to be ($140, $160). A supervisor summarizes this result in a report, saying, “We are 95% confident that the mean cost of repairs is less than $160.” Is the supervisor underestimating the confidence, overestimating it, or getting it right? Explain.

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