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Running times for 400 meters are Normally distributed for young men between 18 and 30 years of age, with a mean of 93 seconds

Running times for 400 meters are Normally distributed for young men between 18 and 30 years of age, with a mean of 93 seconds and a standard deviation of 6 seconds. Thus, 99.7% of running times are approximately between: None of the answer options is correct. 62 and 124 seconds. 75 and 111 seconds. 45 and 141 seconds.

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