- 7k 7c K Assignment Marbles Children Name There Are 2 Blue Marbles And 8 Yellow Marbles In John S Pocket He Randomly 1 (81.94 KiB) Viewed 17 times
|7K|7C K Assignment: Marbles & Children Name There are 2 blue marbles and 8 yellow marbles in John's pocket. He randomly
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|7K|7C K Assignment: Marbles & Children Name There are 2 blue marbles and 8 yellow marbles in John's pocket. He randomly
|7K|7C K Assignment: Marbles & Children Name There are 2 blue marbles and 8 yellow marbles in John's pocket. He randomly takes out marbles one by one. 1. What is the probability that there are no blue marbles within the first 4 trials? [2K] 2. What is the probability that there is exactly one blue marble within the first 4? [2K] 3. Given there are at least one blue marble within the first 3 trials, what is the probability the 2nd marble is blue? [3K] 4. How many trials should John expect to wait before getting a blue marble? [31] 5. Mary and Marylyn are good friends since elementary school. Now they both have two children. Mary has only one son, and Marylyn has at least one son. What are the probabilities of their second children being boys, respectively? [4T]
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