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, if the null hypothesis of no connection between time spent watching TV and time spent reading storybooks is true, how many children watching less than 2 hours of TV and reading more than 2 hours of storybooks on average can we expect?
A) 42.09
B) 155.25
C) 262.92
D) 987.75

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, if the null hypothesis of no connection between time spent watching TV and time spent reading storybooks is true, how many children watching less than 2 hours of TV and reading more than 2 hours of storybooks on average can we expect?
A) 42.09 
B) 155.25 
C) 262.92 
D) 987.75

Quizplus · Accepted Answer

The expected frequency is calculated using the formula: (Row Total * Column Total) / Grand Total. The specific values from Table 12-12 are needed to compute this, but based on the given options, 42.09 is the most reasonable expected frequency for the category of children watching less than 2 hours of TV and reading more than 2 hours of storybooks.

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