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Distribution of Test Scores Assignment | Professional Writing Services

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January 18th, 2020

The distribution of scores on a recent test closely followed a Normal Distribution with a mean of 22 points and a standard deviation of 2 points. For this question, DO NOT apply the standard deviation rule.

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(a) What proportion of the students scored at least 23 points on this test, rounded to five decimal places?

(b) What is the 23 percentile of the distribution of test scores, rounded to three decimal places?

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