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wrote...
Posts: 224
2 weeks ago
A young boy is fishing off the end of a dock. He estimates that for one out of every 15 times he casts his line, he gets at least a nibble from a curious fish. He is going to cast his line 50 times before he switches to toad hunting.

What is the probability that he will cast his line without success 20 times before finally
succeeding the 21st time?
Textbook 

Stats: Modeling the World


Edition: 4th
Authors:
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Answer verified by a subject expert
wrote...
Posts: 261
2 weeks ago
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(14/15)20(1/15) = 0.01677
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wrote...
2 weeks ago
Thanks
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