Question

Use the given degree of confidence and sample data to construct a confidence interval for the population mean µ. Assume that the population has a normal distribution.

n = 30, x = 89.3, s = 18.9, 90 percent

Answer 1

The statistical software output for this problem is:

On the basis of above output, 90% confidence interval will be:

(83.44, 95.16) [Rounded off to 2 decimals]