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# Probability questions 4

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- 23) 7 black balls and 13 white balls are placed in an urn. Two balls are then drawn in succession without replacement. What is the probability that the second

- Please refer to the attachment to answer this question. This question was created from Lab#7. Additional comments: "I tried to use this information for the

- 22) A group students consist of 20 piano players and 7 guitar players. A sample of seven is selected at random. What is the probability that at least one