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A random sample of 75 eight grade students’

by | Dec 1, 2023 | Posted Questions

A random sample of 75 eight grade students’ scores on a national mathematics assessment test has a mean score of 281. This test result prompts a state school administrator to declare that the mean score for the state’s eight graders on this exam is more thn 275. Assume that the population standard deviation is 36. At mean &=0.03, find the standardize test statistic z, and it’s corresponding area( round to two decimal places)

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