Mathematics, 21.04.2021 16:10 blubs6103

A mile-runner's times for the mile are normally distributed with a mean of 4 min 3 sec. (This would have to be expressed in decimal minutes -- 4.05 minutes), and a standard
deviation of 2 seconds (0.0333333 minutes (the underline indicates a repeating decimal)).
What does the mean have to be for a 0.20 probability of the time being 4 minutes or less?

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A mile-runner's times for the mile are normally distributed with a mean of 4 min 3 sec. (This woul...

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