Mathematics, 06.12.2019 16:31, myalee1419

Astudent believes that the average grade on the statistics final examination is 87. a sample of 36 final examinations is taken. the average grade in the sample is 83.96 with a sample standard deviation of 12. carry out the hypothesis testing that the real mean is less than 87. use a 0.05 level of significance.

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Astudent believes that the average grade on the statistics final examination is 87. a sample of 36 f...