Intro Stats
Intro Stats
4th Edition
ISBN: 9780321826275
Author: Richard D. De Veaux
Publisher: PEARSON
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Chapter 17, Problem 5E

SECTION 15.3

7. Hispanic origin According to the 2010 Census, 16% of the people in the United States are of Hispanic or Latino origin. One county supervisor believes her county has a different proportion of Hispanic people than the nation as a whole. She looks at their most recent survey data, which was a random sample of 437 county residents, and found that 44 of those surveyed are of Hispanic origin.

  1. a) State the hypotheses.
  2. b) Name the model and check appropriate conditions for a hypothesis test.
  3. c) Draw and label a sketch, and then calculate the test statistic and P-value.
  4. d) State your conclusion.
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