Mathematics, 23.04.2021 22:50, kevinmoniz90

When Ryan runs the 400 meter dash, his finishing times are normally distributed with a mean of 75 seconds and a standard deviation of 0.5 seconds. Using the empirical rule, determine the interval of times
that represents the middle 68% of his finishing times in the 400 meter race.

10 points help !!

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When Ryan runs the 400 meter dash, his finishing times are normally distributed with a mean of 75...