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College students have travel distances that are approximately normally distributed about a mean of 25 miles and a standard deviation of 10.7. A random sample

College students have travel distances that are approximately normally distributed about a mean of 25 miles and a standard deviation of 10.7. A random sample of size 30 is taken and a mean is calculated. What is the probability that this mean will be between 20 miles and 30 miles?

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