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Author Question: Scores on a computer science aptitude test are normally distributed. The standard deviation of the ... (Read 99 times)

fahad

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on: Jul 24, 2018
Scores on a computer science aptitude test are normally distributed. The standard deviation of the distribution is 6.0, and the 95th percentile for the test is 92 . Find the mean score for this test.

Question 2

Two-year college students have mathematics competency scores that are normally distributed with a mean of 35 (the maximum possible score is 48). The 90th percentile is 40 . Find the standard deviation of the math competency scores.


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asdfasdf

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Reply #1 on: Jul 24, 2018
Answer to Question 1

Mean = 82.1

Answer to Question 2

3.9


fahad

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Reply 2 on: Jul 24, 2018
Excellent

nathang24

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Reply 3 on: Yesterday
Wow, this really help

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