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Author Question: The following data represent the scores of 50 students on a statistics exam. The mean score is ... (Read 88 times)

Starlight

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on: Feb 14, 2020

Question 1

Test scores for a history class had a mean of 79 with a standard deviation of 4.5. Test scores for a physics class had a  mean of 69 with a standard deviation of  3.7. One student earned a 86 on the history test and a 85 on the physics test. Calculate the z-score for each test. On which test did the student perform better?

Question 2

The following data represent the scores of 50 students on a statistics exam. The mean score is 80.02, and the standard deviation is 11.9.

39 51 59 63 66 68 68 69 70 71
71 71 73 74 76 76 76 77 78 79
79 79 79 80 80 82 83 83 83 85
85 86 86 88 88 88 88 89 89 89
90 90 91 91 92 95 96 97 97 98

Find the z-scores for the highest and lowest exam scores.
Statistics ¦ McClave, Sincich, Tamarack ¦ 12th Edition
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Marked as best answer by Starlight on Feb 14, 2020

carolinefletcherr

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Reply #1 on: Feb 14, 2020
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Starlight

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Reply 2 on: Feb 14, 2020
:D TYSM

xiaomengxian

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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