If a Call Is Sampled at Random, the Conditional Probability $\quad$

question 22

Multiple Choice

If a call is sampled at random, the conditional probability that the call is not "6+" minutes long given that it is a long distance call is: $\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\text { Call Length (minutes) }$
$\begin{array}{|c|c|r|c|c|}\hline \text {Type of Phone Call} & 0-1 & 2-5 & 6+ & \text { Total } \\\hline \text { Local } &150 & 250 & 100 & 500 \\\hline \text { Long Distance } &170 & 120 & 10 \\\hline \text { Total } &320 & 370 & 110 & 300 \\\hline\end{array}$

• A)120/300.
• B)10/300.
• C).9667.
• D).6667.

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