A piece of equipment contains six identical items and it is known that three of them are  defective. The items are tested one after the other until the three defective items are found.  a. What is the probability that the testing process is stopped on the  i. third test  ii. fourth test?  b. If the proce

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 4ECP: Show that the probability of drawing a club at random from a standard deck of 52 playing cards is...
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A piece of equipment contains six identical items and it is known that three of them are 
defective. The items are tested one after the other until the three defective items are found. 
a. What is the probability that the testing process is stopped on the 
i. third test 
ii. fourth test? 
b. If the process is stopped on the fourth test, what is the probability that the first item 
is not defective? 

 

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