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I need help solve this question? 11. A nursing school entrance exam has been a road block for many students with the required mean score

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11. A nursing school entrance exam has been a road block for many students with the required mean score for passing at 85. A sample of 85 students from Asmith U. took the test and their scores recorded. (assume pop std dev is 4.8) a. Find the standard error of the mean. b. Find the probability that their mean score was less than 84

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