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New graduates who aspire to work for the provincial government must pass a set of tests. It has been observed that over the last four
New graduates who aspire to work for the provincial government must pass a set of tests. It has been observed that over the last four years, the scores of the candidates on such tests were normally distributed will a mean of 600 and a standard deviation of 50. Let's assume that during the current month, 25 candidates are taking the tests. What is the probability that the average sample score will lie between 590 and 620?
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