TABLE 12-11
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 12-11, if the null hypothesis of no connection between time spent watching TV and time spent reading story books is true, how many children watching less than 2 hours of TV and reading more than 2 hours of story books on average can we expect?
A) 42.09
B) 155.25
C) 262.92
D) 987.75

Question

TABLE 12-11
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 12-11, if the null hypothesis of no connection between time spent watching TV and time spent reading story books is true, how many children watching less than 2 hours of TV and reading more than 2 hours of story books 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 numbers would be needed from Table 12-11 to calculate this, but based on the options, 42.09 is the most reasonable expected frequency for a small subset like children watching less than 2 hours of TV and reading more than 2 hours of story books.

TABLE 12-11 Parents Complain That Children Read Too Few Storybooks and Watch