A batch of 500 hard drives contains 12 defective ones. A sample of 20 of these hard drives is selected for testing. What is the probability that the sample will contain at most 1 defective hard drive? 12 xC (488,19) + C(488,20) C(500,20) 12 500 C(500,20) 12 xC (488,19) + C (488,20) O C(12,1)+C(12,0) 500

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2 A batch of 500 hard drives contains 12 defective ones. A sample of 20 of these hard drives is selected for testing. What is the probability that the sample will contain at most 1 defective hard drive?
A batch of 500 hard drives contains 12 defective ones. A sample of 20 of these hard drives is selected for testing.
What is the probability that the sample will contain at most 1 defective hard drive?
12 x C (488,19) + C(488,20)
C(500,20)
12
500
C(500,20)
12 xC (488,19) + C (488,20)
C(12,1)+C(12,0)
500
Transcribed Image Text:A batch of 500 hard drives contains 12 defective ones. A sample of 20 of these hard drives is selected for testing. What is the probability that the sample will contain at most 1 defective hard drive? 12 x C (488,19) + C(488,20) C(500,20) 12 500 C(500,20) 12 xC (488,19) + C (488,20) C(12,1)+C(12,0) 500
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