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(Solved): Estimate the population mean by finding a 90% confidence interval given a sample of size 56, with a ...



Estimate the population mean by finding a 90% confidence interval given a sample of size 56, with a mean of 53.6 and a standard deviation of 14.2. Preliminary: Is it safe to assume that n< or equal to 0.05 of all subjects in the population? Yes No Is n> or equal to 30 ? Yes No Confidence Interval: What is the 90% confidence interval to estimate the population mean? Enter your answer as an open-interval (i.e., parentheses) accurate to one decimal place. 90% C.I. =



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