The formula used to calculate a confidence interval for the mean of a normal population when n is small is the following. * + (t critical value) What is the appropriate t critical value for each of the following confidence levels and sample sizes? (Round your answers to two decimal places.) LA USE SALT (a) 98% confidence, n = 17 2 24 X (b) 90% confidence, n = 11 1 37 X (c) 99% confidence, n = 24 250 X (d) 90% confidence, n = 23 1 32 X (e) 80% confidence, n = 13 0 87 X (f) 95% confidence, n = 9 1.86 X Need Help? Read It