SCENARIO 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 Scenario 12-12, 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

SCENARIO 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 Scenario 12-12, 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 for expected frequency in a contingency table: (row total * column total) / grand total. The specific numbers for the row total, column total, and grand total are not provided, but based on the options, 42.09 is the most reasonable expected value for a small subset of a population.

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