The cost of a treatment per patient for a certain medical, Ask an Expert

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The cost of a treatment per patient for a certain medical problem was modeled by one insurance company as a Normal distribution with mean $125 and standard deviation of $6.50.
(a) What is the 70th percentile of the distribution of costs?
(b) What is the probability that at least 2 out of 5 randomly selected people in the study will pay more than the amount found in part (a)?

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Category:- Statistics and Probability
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