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Find the probability that the mean stress score

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(a) The stress scores (on a scale of 1 to 1000) of all students before a statistics test are found to be a continuous random variable that is normally distributed with a mean of 740 and a standard deviation of 44. Find the probability that the stress score before a statistics test for a randomly selected student will be more than 745.

(b) Find the probability that the mean stress score before a statistics test for a randomly selected sample of 40 students will be more than 745.

Reference no: EM132399717

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