(Answered) You give a standardized statistics exam for which the

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You give a standardized statistics exam for which the scores are normally distributed with a mean score of 750 and a standard deviation of 100.

a. What is the probability of a score greater than 800?

b. What is the probability of a score lower than 550?

c. What is the probability of a score between 650 and 900?

d. The top 10% of all exam takers will score at least ______on the exam?

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