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According to airlines.org, the average round-trip domestic airfare is $339. Assume that the standard deviation for domestic airfare is $95. A random sample of 50
According to airlines.org, the average round-trip domestic airfare is $339. Assume that the standard deviation for domestic airfare is $95. A random sample of 50 round-trip airfares was selected. What is the probability that the average airfare from this sample is between $315 and $335?
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