Solved: Assuming the scores follow a normal-shaped distribution use, Basic Statistics

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Assuming the scores follow a normal-shaped distribution use

The scores on an exam are posted and the mean is 75 with a standard deviation of 5. Assuming the scores follow a normal-shaped distribution, use the 68-95-99.7 rule to determine each of the following:

Ted scored an 80, what percent of students scored higher than Ted?

What percent of students scored between 60 and 90?

If 70 is passing, what percent of the students passed an exam?

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Basic Statistics: Assuming the scores follow a normal-shaped distribution use

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