In a Survey, 80% of the Voters Support a Particular

question 58

Short Answer

In a survey, 80% of the voters support a particular referendum. If 40 voters are chosen at random, and X
is the number of voters that support this referendum, find the mean and variance of X.

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Definitions:

Dependent Variable

In an experiment or study, the variable that is being tested and measured, often to see the impact of variations in the independent variable.

Randomization

In an experiment involves assigning each individual by chance processes.

Control Group

In experimental research, a group of subjects that does not receive the treatment being tested, used for comparison against the group that does.

Random Sampling

A technique for selecting a sample from a population in a way that every member has an equal chance of being chosen.