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The scores on a IA drafts are normally distributed with a mean 65 and stan- dard deviation of 10. a) What is the probability that

The scores on a IA drafts are normally distributed with a mean 65 and stan- dard deviation of 10.

a) What is the probability that a randomly chosen student scores below 40? b) What is the probability that a student will score between 55 and 70? c) Find the IQR of this distribution.

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