Use the confidence interval to find the estimated margin of error. Then find the sample mean. A store manager reports a confidence interval of (42.6,79.0)
Use the confidence interval to find the estimated margin of error. Then find the sample mean. A store manager reports a confidence interval of (42.6,79.0) when estimating the mean price (in dollars) for the population of textbooks. <:> The estimated margin of error is E. (Type an integer or a decimal.) The sample mean is E. (Type an integer or a decimal.)
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