Statistics students believe that the mean score on a first statistics test is 65. The instructor thinks that themean score is higher. She samples 10 statistics students and obtains the scores:Grades 69 69 63.9 68.4 62.773.5 73.5 64.3Test grades are believed to be normally distributed.Use a significance level of 5%.A. State the alternative hypothesis: HA:Ομ < 65Ομ # 65Ομ > 65B. State the mean of the sample:C. State the standard error of the sample means:D. State the test statistic: t =E. State the p-value:F. Decision:O Fail to reject the null hypothesis.Reject the null hypothesis.73.596

Answered: Image /qna-images/answer/b7805972-26f7-46f2-9c0e-6a96c054185a.jpg

Answered: Statistics students believe that the…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Statistics students believe that the mean score on a first statistics test is 65. The instructor thinks that the mean score is higher. She samples 10 statistics students and obtains the scores: Grades 74.4 96 83.2 65 63.9 64.3 74.4 69 68.4 88 Test grades are believed to be normally distributed.Use a significance level of 5%. State the alternative hypothesis: HA:HA: μ>65μ>65 μ<65μ<65 μ≠65μ≠65 State the mean of the sample: (Round to two decimal places.) State the standard error of the sample means: (Round to four decimal places.) State the test statistic: t=t= (Round to four decimal places.) State the p-value: (Round to four decimal places.) Decision: Reject the null hypothesis. Do not reject the null hypothesis.
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instructor thinks that the mean score is higher. She samples 10 statistics students and obtains the scores: Grades 63.9 68.4 | 69 | 96 64.3 | 63.9 65 69 62.7 68.4 Test grades are believed to be normally distributed. Use a significance level of 5%. A. State the alternative hypothesis: HA: Ou + 65 Ομ 65 B. State the mean of the sample: C. State the standard error of the sample means:
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