There are 20 identical looking packets of white powder. 8 of them contain cocaine and 12 do not. Four of the packets are randomly selected. Let X equal the number of the selected packets which contain cocaine. ROUND TO 3 DECIMILE a. How many possible ways are there to select the 4 out of 20 packets (order does not matter) without replacement? 4845 d. What is the probability that X > 3? h. What is the probability that X = 5? |

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