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What are the mean and standard deviation of x

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Reference no: EM131727418

Question: An allergy medication is successful for 70% of all patients who use it. The medication is given to 200 patients. Let X = number of successful treatments.

a. What are the mean and standard deviation of X?

b. Use the normal curve to approximate the probability that X is 128 or less.

Reference no: EM131727418

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