Given the contingency table shown here, find the probability P(V´), that is, the probability of the complement of V. $\begin{array}{l}
\quad\quad\quad\quad\quad\quad\quad\quad\text { Cell Phone Service Provider }\
\begin{array}{|c|c|c|c|c|}
\hline County&\text { Sprint }(S) &\text { AT\&T }(A)& \text { Verizon }(I)& \text { Row Total }\
\hline Macomb (M) &17 & 25 & 8 & 50 \
\hline Oakland (O) &19 & 38 & 13 & 70 \
\hline Wayne (W) &24 & 37 & 19 & 80 \
\hline Col Total &60 & 100 & 40 & 200 \
\hline
\end{array}
\end{array}$
A).30
B).50
C).80
D).15

Question

Given the contingency table shown here, find the probability P(V´), that is, the probability of the complement of V. $\begin{array}{l}
\quad\quad\quad\quad\quad\quad\quad\quad\text { Cell Phone Service Provider }\
\begin{array}{|c|c|c|c|c|}
\hline County&\text { Sprint }(S) &\text { AT\&T }(A)& \text { Verizon }(I)& \text { Row Total }\
\hline Macomb (M) &17 & 25 & 8 & 50 \
\hline  Oakland (O) &19 & 38 & 13 & 70 \
\hline Wayne (W) &24 & 37 & 19 & 80 \
\hline Col Total &60 & 100 & 40 & 200 \
\hline
\end{array}
\end{array}$
A).30
B).50
C).80
D).15

Quizplus · Accepted Answer

P(V') is the probability of not choosing Verizon. Since there are 40 people with Verizon out of 200 total, P(V') = 1 - P(V) = 1 - (40/200) = 160/200 = .80.

Given the Contingency Table Shown Here, Find the Probability P(V´)