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let us assume that the results of a test are normally distributed. if the average score is 80 with a standard deviation of 10, find

let us assume that the results of a test are normally distributed. if the average score is 80 with a standard deviation of 10, find the following probabilities.

A. Whats the probability that a randomly selected person scores less than a 68?

B. Whats the probability that a randomly selected person scores greater than an 84?

C. Whats the probability that a randomly selected person scores between 68 and 84?

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