8 O No, the smallest expected count is 1.10, so the expected counts are not all at least 5. A political pollster selects a random sample of 75 registered voters from Allegheny County, Pennsylvania. Thecity of Pittsburgh is in Allegheny County. The pollster is interested in determining if the distribution of politicalparty preference among registered voters in this county differs between those who live in Pittsburgh and thosewho live in the suburbs. The responses are displayed in the table.Political PartyDemocraticIndependentRepublicanCity20811LocationSuburbs81018The pollster would like to know if these data provide convincing evidence of a relationship between residentialstatus and political party in the population of all registered voters in Allegheny County. The random and 10%conditions are met. Is the Large Counts condition met?O Yes, the smallest expected count is 8.64, so all expected counts are at least 5.O Yes, the smallest expected count is 9.36, so all expected counts are at least 5.O No, the smallest expected count is 0.20, so the expected counts are not all at least 5.

Solution Given table is the 2× 3 contingency table.

A political pollster selects a random sample of 75 registered voters from Allegheny County, Pennsylvania. The city of Pittsburgh is in Allegheny County. The pollster is interested in determining if the distribution of political party preference among registered voters in this county differs between those who live in Pittsburgh and those who live in the suburbs. The responses are displayed in the table. Political Party Democratic Independent Republican 20 City Suburbs 8 11 Location 8 10 18 The pollster would like to know if these data provide convincing evidence of a relationship between residential status and political party in the population of all registered voters in Allegheny County. The random and 10% conditions are met. Is the Large Counts condition met? O Yes, the smallest expected count is 8.64, so all expected counts are at least 5. O Yes, the smallest expected count is 9.36, so all expected counts are at least 5.

A political pollster selects a random sample of 75 registered voters from Allegheny County, Pennsylvania. The city of Pittsburgh is in Allegheny County. The pollster is interested in determining if the distribution of political party preference among registered voters in this county differs between those who live in Pittsburgh and those who live in the suburbs. The responses are displayed in the table. Political Party Democratic Independent Republican 20 City Suburbs 8 11 Location 8 10 18 The pollster would like to know if these data provide convincing evidence of a relationship between residential status and political party in the population of all registered voters in Allegheny County. The random and 10% conditions are met. Is the Large Counts condition met? O Yes, the smallest expected count is 8.64, so all expected counts are at least 5. O Yes, the smallest expected count is 9.36, so all expected counts are at least 5.

College Algebra

10th Edition

ISBN:9781337282291

Author:Ron Larson

Publisher:Ron Larson

Chapter8: Sequences, Series,and Probability

Section8.7: Probability

Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....

See similar textbooks