A Math Student Is Interested in Counting the Number of Jelly

question 16

Short Answer

A math student is interested in counting the number of jelly beans in a jar. The student opens the jar and removes 45 jelly beans. She places a distinctive mark on each bean and places it back in the jar. After thoroughly shaking the jar, she reaches in and removes 30 jelly beans of which 5 are marked. Using the techniques of capture-mark-recapture, estimate the number of jelly beans in the jar. Give your answer rounded to the nearest whole number.

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Definitions:

Calories

Units of energy used to measure the energy food provides to the body, as well as the energy the body uses in physical activities.

Whole Grains

Grains that contain all essential parts and naturally-occurring nutrients of the entire grain seed, including the bran, germ, and endosperm.

Bran

The outer layer of cereal grains removed during the milling process, rich in fiber and nutrients.

Germ

A microorganism, especially one that causes disease; commonly used to refer to pathogens or microbes.