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A random sample of n=25 is obtained from a population with variance o², and the sample mean is computed. Test the null hypothesis Ho: = 120 versus the alternative hypothesis H₁: H a = 0.05. Compute the critical value x and state your decision rule for the options below. a. The population variance is o² = 196. b. The population variance is o² = 400. c. The population variance is o² = 900. d. The population variance is o² = 600. Click the icon to view the standard normal table of the cumulative distribution function. (Round to four decimal places as needed.)

A random sample of n=25 is obtained from a population with variance o², and the sample mean is computed. Test the null hypothesis Ho: = 120 versus the alternative hypothesis H₁: H a = 0.05. Compute the critical value x and state your decision rule for the options below. a. The population variance is o² = 196. b. The population variance is o² = 400. c. The population variance is o² = 900. d. The population variance is o² = 600. Click the icon to view the standard normal table of the cumulative distribution function. (Round to four decimal places as needed.)

Calculus For The Life Sciences
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter1: Functions
Section1.2: The Least Square Line
Problem 8E
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A random sample of n = 25 is obtained from a population with variance o², and the sample mean is computed. Test the null hypothesis Ho: μ = 120 versus the alternative hypothesis H₁: μ> 120 with x = 0.05. Compute the critical value x, and state your decision rule for the options below. a. The population variance is o² = 196. b. The population variance is o² = 400. c. The population variance is o² = 900. d. The population variance is o² = 600. Click the icon to view the standard normal table of the cumulative distribution function. a. Xc = (Round to four decimal places as needed.)
Transcribed Image Text:A random sample of n = 25 is obtained from a population with variance o², and the sample mean is computed. Test the null hypothesis Ho: μ = 120 versus the alternative hypothesis H₁: μ> 120 with x = 0.05. Compute the critical value x, and state your decision rule for the options below. a. The population variance is o² = 196. b. The population variance is o² = 400. c. The population variance is o² = 900. d. The population variance is o² = 600. Click the icon to view the standard normal table of the cumulative distribution function. a. Xc = (Round to four decimal places as needed.)
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