Question: 13. The mean mark on a provincial standardized test is 72 with a standard deviation of 6, following a normal distribution. a) What is the

13. The mean mark on a provincial standardized test is 72 with a standard deviation of 6, following a normal distribution. a) What is the probability (as a percent to two decimal places) that a given student will achieve mark between 60 and 75? b) What is the probability (as a percent to two decimal places) that a given student will ach above 80

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