Scores of students in a large Statistics class are normally distributed with a mean of 75...

Scores of students in a large Statistics class are normally distributed with a mean of 75 points and a standard deviation of 5 points.

Find the probability that a student scores more than 80 points
If 100 students are picked at random, how many do you expect to score below 70 points?
If top 10% of students obtain an A grade, how much should a student obtain to get an A grade.
Suppose four students are picked at random, find the probability that the average score of those four students is more than 80 points.

Please show all your work with explanation

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Expert Solution

orchestra answered 1 year ago

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