A Sample of 220 Shoppers at a Large Suburban Mall

Multiple Choice

A sample of 220 shoppers at a large suburban mall were asked two questions: (1) Did you see a television adfor the sale at department store X during the past 2 weeks? (2) Did you shop at department store X during thepast 2 weeks? The responses to the questions are summarized in the table. What is the probability that arandomly selected shopper from the 220 questioned did not shop at department store X? Round the the nearestthousandth. $$\begin{array} { l | c | c } & \text { Shopped at X } & \text { Did Not Shop at X } \\\hline \text { Saw ad } & 100 & 35 \\\hline \text { Did not see ad } & 35 & 50\end{array}$$

A) 0.386
B) 0.159
C) 0.227
D) 0.614