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1. On a marhematics test in highschool, scores are normally distributed with a mean of 77...

1. On a marhematics test in highschool, scores are normally distributed with a mean of 77 and a standard deviation of 16.8. A student is randomly selected. find the probability that his/her score is smaller than 60?

2. Find the probability it is between 60 and 80.


Math   Statistics-And-Probability   
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