Question

A simple random sample of 60 is drawn from a normally distributed population, and the mean is found to be 28, with a standard deviation of 5. Which of the following values is within the 95% confidence interval (z-score = 1.96) for the population mean?

The value of 26, because it’s not greater than 26.7 and less than 29.3.
The value of 27, because it’s greater than 26.7 and less than 29.3.
The value of 32, because it’s greater than 23 and less than 33.
The value of 34, because it’s not greater than 23 and less than 33.

Answer 1

@jojokiw3

Answer 2

@KendrickLamar2014