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OpenStudy (anonymous):
Suppose you have a sample selected from a normally distributed population and the sample mean is 64.5 and the sample standard deviation is s = 7.6. Find a 95% confidence interval for µ assuming n=9. (53.78, 60.73) (58.66,70.34) (61.47, 67.21) (62.16, 72.57)
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