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What is the probability that a randomly selected student will score above 542.3? Find the score that correspond to the 10th percentile. Find the score

What is the probability that a randomly selected student will score above 542.3?

Find the score that correspond to the 10th percentile.

Find the score that corresponds to the 90th percentile.

I have a hard time setting these problems up.

mean 542.3 the SD 120.4

The score required is 500 it is rare for students with scores less than 600 to be admitted.

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