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Psychology 231 can be taken as an online course on a pass/fail basis. Long experience with...

Psychology 231 can be taken as an online course on a pass/fail basis. Long experience with this course shows that about 71% of the students pass. This semester 88 students are taking psychology 231 online. Let r be a random variable that represents the number of students that will pass. The psychology department wants a probability distribution for r.

A)estimate P(r>=60)

B) estimate P(60<=r<=70)

Math   Statistics-And-Probability   
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