Asample of 64 was taken from a population, with the mean of the sample being 119 and the standard deviation of the sample being 16. what is the 95% confidence interval for the mean of the population? a. (115, 123) b. (117, 121) c. (113, 125) d. (118, 120)

We have the sample size, sample mean and the sample standard deviation. Since the population standard deviation is not know, we will use t-distribution to find the confidence interval.

The critical t value for 95% confidence interval and 63 degrees of freedom is 1.998.

The 95% confidence for the population mean will be:



Thus, the 95% confidence interval for the population mean will be (115,123)

So, option A is the correct answer

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