Inspecting Meat Is a Very Important Part of the Process

question 37

Essay

Inspecting meat is a very important part of the process of ensuring healthy food. So
that meat inspectors do not fall into a pattern of inspection, they use a 4-sided die to
decide whether or not to sample the meat from a particular "side" of beef. The meat
inspector rolls the die and if it comes up a 4, a sample is taken of that meat. Define
random variable x number of samples inspected in a meat locker with 30 sides of
beef.
a) What is the mean of the random variable x?
b) What is the standard deviation of the random variable x?

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Definitions:

Hemolymph

The fluid that bathes the tissues in animals with an open circulatory system (e.g., arthropods and most mollusks).

Hemocoel

Blood cavity characteristic of animals with an open circulatory system.

Hemocyanin

A hemolymph pigment that transports oxygen in some mollusks and arthropods.

Anemia

A condition characterized by a deficiency of red cells or of hemoglobin in the blood, resulting in pallor and weariness.