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Rework problem 30 from the Chapter 2 review exercises in your text, involving basketballs with defective valves. For this problem, assume the bag contains 15 basketballs, 7 of which have defective valves. You choose 3 out of the bag randomly. What is the probability that at least 1 will have a defective valve?

Respuesta :

Answer: 0.877

Step-by-step explanation:

The bag contains 15 basketballs

7 have defective valves.

8 are good

choose 3 out of the bag randomly

probability that at least 1 will have a defective valve = 1 - probability of none have a defect, so

P of no defect: 8/15 * 7/14 * 6/13 = 0.123

at least 1: 1 - 0.123 = 0.877

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