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Biological measurements on the same species often follow a


Problem: Biological measurements on the same species often follow a normal distribution quite closely. The weights of seeds of a variety of winged beans are approximately normal with a mean of 525 mg and a standard deviation of 110 mg.

Requirement:

A) What percent are over 500?

B) What is the range for the highest 10%?

C) What is the range for the lowest 5%?

D) What is the range for the middle 90%?

E) What percent are under 510?

F) What percent are between 500 and 600?

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