The average length of time required to complete a college achievement test is approximately normal with a mean of 65 minutes and a standard deviation of 11 minutes. When should the test be terminated if you wish to allow sufficient time for 90% of the students to complete the test?

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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The average length of time required to complete a college achievement test is
approximately normal with a mean of 65 minutes and a standard deviation of 11
minutes. When should the test be terminated if you wish to allow sufficient time for
90% of the students to complete the test?
Transcribed Image Text:The average length of time required to complete a college achievement test is approximately normal with a mean of 65 minutes and a standard deviation of 11 minutes. When should the test be terminated if you wish to allow sufficient time for 90% of the students to complete the test?
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