A random sample of 81 individuals finds a sample mean value of 65 and sample standard deviation of 4.5. What is the 95% confidence interval for the population mean?

A random sample of 81 individuals finds a sample mean value of 65 and sample standard deviation of 4.5. What is the 95% confidence interval for the population mean?

B. [64.02 , 65.98]

D. [63.71 , 65.29]

A. [64.17 , 65.83]

C. [63.84, 66.16]