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A Random Sample of Size 15 Taken from a Normally

Question 83

Multiple Choice

A random sample of size 15 taken from a normally distributed population revealed a sample mean of 75 and a sample variance of 25. What would the upper limit of a 95% confidence interval for the population mean equal?


A) 77.769
B) 77.273
C) 72.727
D) 72.231

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