1. Suppose the scores on a chemistry test were normally distributed with a mean of 78 and...

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1. Suppose the scores on a chemistry test were normally distributed with a mean of 78 and a standard deviation of 10. If a student who completed the test is chosen at random,

a. Find the probability that the student earned fewer than 75 points.

b. Find the probability that the student earned at least 70 points.

c. Find the probability that the student earned between 80 and 90 points.

d. Find the probability that the student earned either less than 80 points or more than 90 points.

Related Book For answer-question

Applied Statistics in Business and Economics

ISBN: 978-0073521480

4th edition

Authors: David Doane, Lori Seward

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Posted Date: Apr 02, 2019 10:22 AM

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1. Suppose the scores on a chemistry test were normally distributed with a mean of 78 and...

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Applied Statistics in Business and Economics

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