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A normal distribution has a mean of = 100 with = 20.If one score is randomly selected from this distribution, what is the probability that

A normal distribution has a mean of = 100 with = 20.If one score is randomly selected from this distribution, what is the probability that the score will have a value between X = 80 and X = 120?

A normal distribution has a mean of = 40 with = 10.What proportion of the scores in this distribution are greater than X = 30?

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