Assume that sat scores are normally distributed

Assume that sat scores are normally distributed

Assume that sat scores are normally distributed with mean equal to 1518 and standard deviation of 325.

1- if one sat score is randomly selected, find the probability that it is between 1440 and 1480.

2- if 16 sat scores are randomly selected, find the probability that they have a mean between 1440 and 1480.
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