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Two Percent (2%)of the Customers of a Store Buy Cigars

Question 30

Essay

Two percent (2%)of the customers of a store buy cigars.Half of the customers who buy cigars buy beer.25 percent who buy beer buy cigars.Use the following contingency table. BeerBeer‾ Cigars .01.01.02 Cigars ‾.03.95.95.04.961.0\begin{array}{lll}&\mathrm{Beer}&\overline{\mathrm{Beer}}\\\text { Cigars }&.01 & .01 & .02 \\\overline{\text { Cigars }}&.03 & .95 & .95 \\&.04 & .96 & 1.0\end{array}
-What is the probability that all balls are the same colour?

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