Patrick B. answered 07/13/19
Math and computer tutor/teacher
the z-score is (45-60)/5 = -15/5 = -3
Prob( z< -3) is essentially zero
Trinity V.
asked 07/13/19The points obtained by students of a class in a test are normally distributed with a mean of 60 points and a standard deviation of 5 points.
About what percent of students have scored less than 45 points?
Patrick B. answered 07/13/19
Math and computer tutor/teacher
the z-score is (45-60)/5 = -15/5 = -3
Prob( z< -3) is essentially zero
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