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    Probability of a score

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    2. Assume that the mean SAT score in Mathematics for 11th graders across the nation is 500, and that the standard deviation is 100 points. Find the probability that the mean SAT score for a randomly selected group of 150 11th graders is between 470 and 530.

    Please show all work for me to better understand how it was done.

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    Hi there,

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    The probability of a score is determined.