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A professor knows that her statistics students' final exam scores have a mean of 78 and a standard deviation of 10.2. In his class, an
A professor knows that her statistics students' final exam scores have a mean of 78 and a standard deviation of 10.2. In his class, an "A" is any exam score of 90 or higher. This quarter she has 23 students in her class. What is the probability that 5 students or more will score an "A" on the final exam
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