A random sample of 78 ninth grade student's scores on a national mathematics assessment test has a mean score of 264. This test result prompts a state school administrator to declare that the mean score for the state's ninth graders on this exam is more than 280. Assume that the population standard deviation is 32. At alpha= 0.05, is there enough evidence to support the administrator's claim?

A random sample of 78 ninth grade student's scores on a national mathematics assessment test has a mean score of 264. This test result prompts a state school administrator to declare that the mean score for the state's ninth graders on this exam is more than 280. Assume that the population standard deviation is 32. At alpha= 0.05, is there enough evidence to support the administrator's claim?

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.

Chapter13: Probability And Calculus

Section13.2: Expected Value And Variance Of Continuous Random Variables

Problem 10E

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