Scores on a marketing exam are known to be normally, Applied Statistics

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Scores on a marketing exam are known to be normally

Scores on a marketing exam are known to be normally distributed with mean and standard deviation of 60 and 20.

a) Find the probability that a randomly selected student scores between 50 and 80.

b) Find the probability that a randomly selected student scores between 20 and 40.

c) The syllabus suggests that the top 15% of the students will get an A in the course. What is the minimum score required to get an A?

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Applied Statistics: Scores on a marketing exam are known to be normally

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Applied Statistics: Scores on a marketing exam are known to be normally

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