Instruction 15-10
Parents Complain That Children Read Too Few Storybooks

Multiple Choice

Instruction 15-10
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.
| Average time spent reading story books |
$$\begin{array} { | l | c | c | c | } \hline \begin{array} { l } \text { Average time spent } \\\text { watching TV }\end{array} & \begin{array} { c } \text { Less than } \\1 \text { hour }\end{array} & \begin{array} { c } \text { Between } \\1 \text { and 2 hours }\end{array} & \begin{array} { c } \text { More than } \\2 \text { hous }\end{array} \\\hline \text { Less than 2 hours } & 90 & 85 & 130 \\\hline \text { More than 2 hours } & 655 & 32 & 8 \\\hline\end{array}$$
-Referring to Instruction 15-10,suppose you 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 story books,the critical value will be

A) 5.991.
B) 14.449.
C) 7.378.
D) 12.592.