The distribution of scores on a recent test closely followed a Normal Distribution with a mean of 22 points and a standa

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The distribution of scores on a recent test closely followed a Normal Distribution with a mean of 22 points and a standa

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The Distribution Of Scores On A Recent Test Closely Followed A Normal Distribution With A Mean Of 22 Points And A Standa 1
The Distribution Of Scores On A Recent Test Closely Followed A Normal Distribution With A Mean Of 22 Points And A Standa 1 (33.54 KiB) Viewed 30 times
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. (a) What proportion of the students scored at least 20 points on this test, rounded to five decimal places? (b) What is the 71 percentile of the distribution of test scores, rounded to three decimal places?
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