A gasoline distributor wonders whether an individual's income level influences the grade of gasoline purchased.The following is a contingency table from a random sample of 300 individuals.
Using $\alpha$ = .01,critical chi-square value is ______________.
A)15.09
B)7.88
C)9.21
D)16.81
E)17.89

Question

A gasoline distributor wonders whether an individual's income level influences the grade of gasoline purchased.The following is a contingency table from a random sample of 300 individuals. 
 Using $\alpha$ = .01,critical chi-square value is ______________.
A)15.09 
B)7.88 
C)9.21 
D)16.81 
E)17.89

Quizplus · Accepted Answer

To find the critical chi-square value, we need to use the degrees of freedom (df) formula, which is (number of rows - 1) x (number of columns - 1). In this case, df = (2 - 1) x (3 - 1) = 2. Using a chi-square distribution table with df=2 and α=0.01, the critical chi-square value is 9.21.

A Gasoline Distributor Wonders Whether an Individual's Income Level Influences α\alphaα

A Gasoline Distributor Wonders Whether an Individual's Income Level Influences $\alpha$