Assume that the amount of time eighth-graders take to complete an assessment examination is 78 minutes with

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Assume that the amount of time eighth-graders take to complete an assessment examination is 78 minutes with a standard deviation of 12 minutes.

a. What proportion of eighth-graders complete the assessment examination in 72 minutes or less?

b. What proportion of eighth-graders complete the assessment examination in 82 minutes or more?

c. For what number of minutes would 90% of all eighth-graders complete the assessment examination?

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Business Statistics

ISBN: 9781292220383

10th Global Edition

Authors: David Groebner, Patrick Shannon, Phillip Fry

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Question Posted: Sep 19, 2024 06:01 PM

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Assume that the amount of time eighth-graders take to complete an assessment examination is 78 minutes with

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