A political pollster selects a random sample of 75 registered voters from Allegheny County, Pennsylv

Tashan Flores

Tashan Flores

Answered question

2022-03-01

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 PartyLocation Democratic  Independent  Republican  City 20811 Suburbs 81018 
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. What is the appropriate inference procedure?
1. chi-square test for goodness of fit because the data come from one random sample
2. chi-square test for homogeneity because the data come from independent random samples
3. chi-square test for association/independence because the data come from one random sample
4. chi-square test for association/independence because the data come from independent random samples

Answer & Explanation

toeneepnla

toeneepnla

Beginner2022-03-02Added 4 answers

Chi-square test:
The hypothesis testing is carried out to check whether there is any relationship between the categorical variables. This test is called as chi-square test of independence.
Explanation:
In the given situation, the relationship between residual status and political party in the population of all registered voters in Allegheny County. That is, the testing is based on comparing two categorical groups.
Hence, the suitable test is chi square test for independence.
Correct option: 4. Chi-square test for association/independence because the data come from independent random samples
benehmenshgf

benehmenshgf

Beginner2022-03-03Added 7 answers

Its good, thanks

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