Question: 1.Suppose the exam average in a class is 48% with a standard deviation of 15. What proportion of students scored within two standard deviations of

1.Suppose the exam average in a class is 48% with a standard deviation of 15. What proportion of students scored within two standard deviations of the mean? Round to two places.

2. Assuming a standard normal distribution, compute Pr(-1.5

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