A researcher selects a sample of 100 people to investigate the relationship between gender (male/female)and registering to vote.The sample consists of 40 females,of whom 30 are registered voters,and 60 males,of whom 40 are registered voters.If these data are used for a chi-square test for independence,what is the observed frequency for registered males?
A)12
B)28
C)40
D)42

Question

A researcher selects a sample of 100 people to investigate the relationship between gender (male/female)and registering to vote.The sample consists of 40 females,of whom 30 are registered voters,and 60 males,of whom 40 are registered voters.If these data are used for a chi-square test for independence,what is the observed frequency for registered males?
A)​12
B)​28
C)​40
D)​42

Quizplus · Accepted Answer

To find the observed frequency for registered males, we need to look at the male column and the "registered" row, which gives us 40. Therefore, the answer is C, which corresponds to 40.

A Researcher Selects a Sample of 100 People to Investigate