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Probability of 95th percentile of the SAT verbal scores

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Assume that verbal scores on the SAT exam have a normal distribution with a population mean 500 points and a population standard deviation of 100. What is the probability that a randomly chosen makes at least 520 but no more than 610 and what is the 95th percentile of the SAT verbal scores?

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mu = 500, sigma = 100

(a) z = (x - mu)/sigma

z = (520 - 500)/100 = 0.2 and z = (610 - 500)/100 = ...

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