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I hope the solution For a sample of size 20 taken from a normally distributed population with standard deviation equal to 5, a 90% confidence

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For a sample of size 20 taken from a normally distributed population with standard deviation equal to 5, a 90% confidence interval for the population mean would require the use of: O t = 1.729 4 O t = 1.328 0 2 = 1.645 Z = 1.96 TO

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