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Author Question: Scores of high school students on a national calculus exam were normally distributed with a mean of ... (Read 129 times)

serike

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on: Jun 24, 2018
Scores of high school students on a national calculus exam were normally distributed with a mean of 86 and a standard deviation of 4 . (Total possible points = 100.) What is the probability that a randomly selected student will have a score between 80 and 90?

Question 2

Scores of high school students on a national calculus exam were normally distributed with a mean of 86 and a standard deviation of 4 . (Total possible points = 100.) What is the probability that a randomly selected student will have a score of 80 or higher?


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rnehls

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

0.7745

Answer to Question 2

0.9332


serike

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Reply 2 on: Jun 24, 2018
Excellent

xiaomengxian

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Reply 3 on: Yesterday
Wow, this really help

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