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# Which of the following is closest to the proportion of field mice with a weight greater than 33 grams?

A researcher is studying a group of field mice. The distribution of the weight of field mice is approximately normal with mean 25 grams and standard deviation 4 grams. Which of the following is closest to the proportion of field mice with a weight greater than 33 grams?

A. 0.023

B. 0.046

C. 0.954

D. 0.977

E. 1.000

### 2 Answers

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- Wayne DeguManLv 71 month agoFavorite Answer
P(W > 33) => P(z > (33 - 25)/4)

i.e. P(z > 2)

or, 1 - P(z < 2)

From normal table we get:

1 - 0.9772 = 0.0228

so, about 0.023 => 2.3%

:)>

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