Exhibit 12.5 In the following table,individuals are cross-classified by their age group and income level. Refer to Exhibit 12.5.At the 5% significance level,the critical value is:
A)13.277
B)11.143
C)9.488
D)7.779

Question

Exhibit 12.5 In the following table,individuals are cross-classified by their age group and income level.  Refer to Exhibit 12.5.At the 5% significance level,the critical value is:
A)13.277 
B)11.143 
C)9.488 
D)7.779

Quizplus · Accepted Answer

To find the critical value, we need to use a chi-square distribution table with (3-1)*(4-1) = 6 degrees of freedom (df). At the 5% significance level, the corresponding critical value for 6 df is 9.488. Therefore, choice C is the best answer.