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# Normal Probability distributions: The reported scores on a nationally standardized achievement test for high school graduates have a mean of 500 with...

**Normal Probability distributions: The reported scores on a nationally standardized achievement test for high school graduates have a mean of 500 with the standard deviation of 100. The scores of are approximately normally distributed, what is the probability that the score of a randomly chosen individual will be (a) between 500 and 650? And (b) between 450 and 600? **