What fraction of american males weigh more than 225 pounds

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Suppose that the weight of a typical American male follows a normal distribution with μ = 180 lb and σ = 30 lb. Also, suppose 91.92% of all American males weigh more than I weigh.

a. What fraction of American males weigh more than 225 pounds?

b. How much do I weigh?

c. If I weighed 20 pounds more than I do, what percentile would I be in?

Reference no: EM131166858

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