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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Suppose for a particular week, the forecasted sales were $4,000. The actual sales were $3,000. What is the value of the mean absolute percentage error?

Use truth tables to determine whether the following propositions are logically equivalent, contradictory, consistent, or inconsistent. W É T / ~ T É ~ W

AND TRUTH TABLE TRUE FALSE NULL TRUE (a) (d) (g) FALSE (b) (e) (h) NULL (c) (f) (i) Use the space provided to answer for each letter. Note: Blank #1 corresponds to (a), Blank #2 corresponds to (b), and so forth. Blank # 1 Blank # 2 Blank # 3 Blank # 4 Blank # 5 Blank # 6 Blank # 7 Blank # 8 Blank # 9 N N N 1 A A A/