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atistics students believe that the mean score on a first statistics test is 65. The instructor thinks that the ean score is higher. She samples 10 statistics students and obtains the scores: Grades 74.4 63.9 69 85.5 96 96 88 64.3 68.4 64.3 est grades are believed to be normally distributed. Ise a significance level of 5%. A. State the alternative hypothesis: HA: Ομ7 5 Ομ> 65 B. State the mean of the sample: C. The test is: O Right-tailed. O Two-tailed O Left-tailed

atistics students believe that the mean score on a first statistics test is 65. The instructor thinks that the ean score is higher. She samples 10 statistics students and obtains the scores: Grades 74.4 63.9 69 85.5 96 96 88 64.3 68.4 64.3 est grades are believed to be normally distributed. Ise a significance level of 5%. A. State the alternative hypothesis: HA: Ομ7 5 Ομ> 65 B. State the mean of the sample: C. The test is: O Right-tailed. O Two-tailed O Left-tailed

MATLAB: An Introduction with Applications
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 63.9 69 85.5 96 96 88 64.3 68.4 64.3 Test grades are believed to be normally distributed. Use a significance level of 5%. A. State the alternative hypothesis: HA: Ομ, 65 Ou< 65 Ou > 65 B. State the mean of the sample: C. The test is: O Right-tailed. O Two-tailed O Left-tailed D. Hopefully you drew a picture of all of this. O Submit Question C
Transcribed Image Text: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 63.9 69 85.5 96 96 88 64.3 68.4 64.3 Test grades are believed to be normally distributed. Use a significance level of 5%. A. State the alternative hypothesis: HA: Ομ, 65 Ou< 65 Ou > 65 B. State the mean of the sample: C. The test is: O Right-tailed. O Two-tailed O Left-tailed D. Hopefully you drew a picture of all of this. O Submit Question C
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