Short Answer
Use the following information for questions:
The distribution of quiz, exam, and course grades is known to be left-skewed. The course grades (measured as percentage scores) in upper level statistics classes have a mean of 68 with a standard deviation of 15.
-Suppose one course grade is to be randomly selected. Can we calculate the probability that this grade is higher than 75? If yes, calculate it. If no, explain why not.
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