Assume that a computer was used to generate the given confidence interval for the population mean, u. Find the sample mean or margin of error as specified. 10) 22<μ<31 Find the sample mean, x and the margin of error, E. A) x = 26.5 and E = 9 B) x = 26.5 and E = 4.5 C) x = 22 and E=9 D) x = 31 and E = 4.5
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