Find the Mean of the Binomial Random Variable

question 107

Multiple Choice

Find the mean of the binomial random variable. Round to two decimal places when necessary.
-In a certain town, 90 percent of voters are in favor of a given ballot measure and 10 percent are opposed. For groups of 180 voters, find the mean for the random variable X, the number who Oppose the measure.

• A)10
• B)90
• C)18
• D)162

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Definitions:

Apocrine

A type of gland that releases its secretions by pinching off a portion of the cell, found mainly in the underarm and groin area, contributing to body odor when the secretion is broken down by bacteria.

Exocytosis

A cellular process in which substances are moved out of the cell through the fusion of vesicles with the plasma membrane.

Endocrine Gland

Glands of the endocrine system that secrete hormones directly into the bloodstream, regulating various body functions.

Exocrine Gland

A gland that releases its secretions through ducts directly into external environments or internal surfaces, rather than into the bloodstream.