- #1
bunnypatotie
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1. 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.
- I'm confused on what test statistic to use. I think z-statistic and CLT are both possible for this problem.
- I'm confused on what test statistic to use. I think z-statistic and CLT are both possible for this problem.