Use a Contingency Table A) 056
B) 0

Multiple Choice

Use a contingency table.
-Suncast Cable offers high definition (HD) cable TV, Internet and phone services to its
Customers. For those service issues that can be resolved by calling its technical support
Center, Suncast's goal is to have the problem solved within 30 minutes. In order to
Determine how well it is achieving this goal, they monitored calls to its technical support
Center over the last three months. The data compiled is shown in the table below. What
Is the probability that a call to the technical support center involved an issue with Internet
Service? $$\begin{array} { | l | l | l | l | } \hline \text { Problem Resolved? } & \text { HD cable TV } & \text { Internet } & \text { Phone } \\\hline \text { Yes } & 123 & 350 & 77 \\\hline \text { No } & 115 & 122 & 63 \\\hline\end{array}$$

A) 0.56
B) 0.41
C) 0.74
D) 0.26
E) 0.35