The rubber balls are all the same size, texture, weight, etc. They cannot be dis

Question

The rubber balls are all the same size, texture, weight, etc. They cannot be distinguished without looking at them. The box is covered and shaken vigorously until the rubber balls are randomly mixed up. Use the Second Rubber Balls in a Box Setup. Suppose 3 rubber balls are to be randomly drawn out (all at once). Find the probability that the numbers on the rubber balls will be sequential (when, after drawing, the numbers are arranged lowest to highest). Use the Second Rubber Balls in a Box Setup. Suppose 6 rubber balls are to be randomly drawn out (all at once). Find the probability that four of the rubber balls will have one color, and the other two rubber balls will have another color. Suppose that the probability that Bob will go downtown is 32%. Now. also suppose that if Bob goes downtown, then the probability that he will stop by a coffee shop is 56%. Find the probability that Bob will go downtown and stop at a coffee shop.

Explanation / Answer

7

We got to know/use the multiplicative property for probability here:

P( bob goes D) = .32
P( bob has C when he does D)=.56
P( bob goes D and has D) = P( bob goes D)*P( bob has C when goes D)
=0.32*0.56
=0.1792

Answer is option B

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