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The lengths of pregnancies in a small rural village are normally distributed with a mean of...

The lengths of pregnancies in a small rural village are normally distributed with a mean of 261.4 days and a standard deviation of 13.7 days.

In what range would you expect to find the middle 98% of most pregnancies?
Between and .

Enter your answers as numbers. Your answers should be accurate to 1 decimal places.

Math   Statistics-And-Probability   
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