TABLE 12-12
Parents complain that children read too few storybooks and watch too much television nowadays. A survey of 1,000 children reveals the following information on average time spent watching TV and average time spent reading storybooks.

-Referring to Table 12-12, suppose we want to constrain the probability of committing a Type I error to 5% when testing whether there is any relationship between average time spent watching TV and average time spent reading storybooks, the critical value will be
A) 5.991.
B) 7.378.
C) 12.592.
D) 14.449.

Question

TABLE 12-12
Parents complain that children read too few storybooks and watch too much television nowadays. A survey of 1,000 children reveals the following information on average time spent watching TV and average time spent reading storybooks.
 
-Referring to Table 12-12, suppose we want to constrain the probability of committing a Type I error to 5% when testing whether there is any relationship between average time spent watching TV and average time spent reading storybooks, the critical value will be
A) 5.991. 
B) 7.378. 
C) 12.592. 
D) 14.449.

Quizplus · Accepted Answer

The critical value for a chi-square test with a significance level of 5% (0.05) and 2 degrees of freedom is 5.991.

TABLE 12-12 Parents Complain That Children Read Too Few Storybooks and Watch