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Author Question: The following data represent the scores of 50 students on a statistics exam. The mean score is ... (Read 103 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.
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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
Wow, this really help

matt95

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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