Mathematics, 12.03.2021 15:10 geg05

The results from a statistics class' first exam are as follows: The mean grade obtained by its 25 students is 83, with a standard deviation of 11. The distribution of grades was unimodal and symmetrical. What is the probability that a student received a grade above 90

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The results from a statistics class' first exam are as follows: The mean grade obtained by its 25 st...