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A) Construct the indicated confidence interval for the population mean mu using

A) Construct the indicated confidence interval for the population mean mu using the t-distributionc=0.95,  x-overbar=12.7,  s=2.0, n=9The 95% confidence interval using a t-distribution is (  ,  )B) A population has a mean mu=84 and a standard deviation sigma=28. Find the mean and standard deviation of a sampling distribution of sample means with sample size n=49.mu-x= Sigma-x=

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