The formula used to calculate a confidence interval for the mean of a normal population when n is small is the following. S x + (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.) IЛ USE SALT (a) 95% confidence, n = 17 (b) 90% confidence, n = 12 (c) 99% confidence, n = 24 (d) 90% confidence, n = 23 (e) 80% confidence, n = 13 (f) 95% confidence, n9

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