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Name: April 17, 2001 Score:

MATH 147

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Quiz 10

(10pts.)

Problem 1. A certain town consists of 1000 people with the following political affiliations: 400 are Democrats, 350 are Republican, 100 are Independent, 50 are Libertarian and 100 are Green. A random sample of 100 people is taken with replacement.

Find the expected value for the percent of Republicans in this sample.

Find the standard error for the percent of Republicans in this sample.

Approximately what is the probability that your sample contains more than 43% Republicans?