Question: How do I find the solution on this question? The average length of time required to complete a college achievement test is approximately normal with

How do I find the solution on this question?

The average length of time required to complete a college achievement test is approximately normal with a mean of 80 minutes and a standard deviation of 13 minutes. When should the test be terminated (in minutes) if you wish to allow sufficient time for 85% of the students to complete the test? (Round your answer to two decimal places.) min

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