Suppose that the time to complete a test is bell-shaped distributed with mean 45 minutes and standard deviation 15 minutes. if the test period is 75 minutes long, what proportion of students will be expected

asked Feb 8, 2019 55.7k views

4 votes

by Walf

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6 votes

75-45/15= 2. 1-p-value of 2 (.9772)= .0228

Gurinder answered Feb 15, 2019

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