find-the-critical-value-used-to-construct-a-98-confidence-interval-for-the-mean-of-a-population-assume-that-the-standard-deviation-of-the-population-is-not-known-also-assume-that-n-25

Find the critical value used to construct a 98% confidence interval for the mean of a population.

Assume that the standard deviation, σ, of the population is not known. Also assume that n=25.