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What is the UCL for a 95% confidence interval for a sample mean of 100, a...

What is the UCL for a 95% confidence interval for a sample mean of 100, a sample standard deviation of 15, and a sample size of 12?

A) 90.5

B) 90.6

C) 109.5

D) 109.4

math   Statistics-And-Probability   
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