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2. The Head of the Mathematics Department announced that the mean score of Grade 11 students in the second periodical test in Statistics was 89, and the standard deviation was 12. One student believed that the mean score was less than this, randomly selected 34 students, computed their mean score, and obtained a mean score of 85. At 0.01 level of significance, test the student's belief.

2. The Head of the Mathematics Department announced that the mean score of Grade 11 students in the second periodical test in Statistics was 89, and the standard deviation was 12. One student believed that the mean score was less than this, randomly selected 34 students, computed their mean score, and obtained a mean score of 85. At 0.01 level of significance, test the student's belief.

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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Answer the number 2 only

1. A previous study on the effect of blended learning model on senior high school students' achievement revealed that their mean score μ is 85 with a standard deviation of 3. Juliana, a Senior High School Statistics teacher, surveyed a class of 30 students in Statistics and found out that their mean score was 83 with a standard deviation of 4. Test the hypothesis at a 0.10 level of significance. 2. The Head of the Mathematics Department announced that the mean score of Grade 11 students in the second periodical test in Statistics was 89, and the standard deviation was 12. One student believed that the mean score was less than this, randomly selected 34 students, computed their mean score, and obtained a mean score of 85. At 0.01 level of significance, test the student's belief.
Transcribed Image Text:1. A previous study on the effect of blended learning model on senior high school students' achievement revealed that their mean score μ is 85 with a standard deviation of 3. Juliana, a Senior High School Statistics teacher, surveyed a class of 30 students in Statistics and found out that their mean score was 83 with a standard deviation of 4. Test the hypothesis at a 0.10 level of significance. 2. The Head of the Mathematics Department announced that the mean score of Grade 11 students in the second periodical test in Statistics was 89, and the standard deviation was 12. One student believed that the mean score was less than this, randomly selected 34 students, computed their mean score, and obtained a mean score of 85. At 0.01 level of significance, test the student's belief.
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