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The final exam in a certain course has scores that are normally distributed with a mean...

The final exam in a certain course has scores that are normally distributed with a mean of 70.9 with a standard deviation of 6.1. If 19 students are randomly selected, find the probability that the mean of their final exam scores is less than 67.

Round your answer 4 places after the decimal point.

Math   Statistics-And-Probability   
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