A Random Sample of Size 15 Taken from a Normally

question 47

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.The upper limit of a 95% confidence interval for the population mean would equal:

• A)77.77
• B)72.23
• C)88.85
• D)77.27

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