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What is the probability that white blood count

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The CDC sampled white blood cells from 1,241 people, and found the average number of cells per microliter to be 4.5 with a standard deviation of 1.63. Assume the white blood cell count is normally distributed.

a) If one person from this group is randomly selected, what is the probability that their white blood count is between 3.2 and 5 cells per microliter?

b) What white blood cell count number corresponds to someone in the 90th percentile?

Reference no: EM132845571

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