Weighing bean seeds. Biological measurements on the same species oftenfollow a Normal

Chapter 0, Problem 7.26

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Weighing bean seeds. Biological measurements on the same species oftenfollow a Normal distribution quite closely. The weights of seeds of a variety ofwinged bean are approximately Normal with mean 525 milligrams (mg) andstandard deviation 110 mg.(a) What percent of seeds weigh more than 500 mg?(b) If we discard the lightest 10% of these seeds, what is the smallest weightamong the remaining seeds?

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