SOLUTION: 4. A quality-control procedure for testing ready-flash disposable cameras consists of drawing 2 cameras at random from each lot of 100 without replacing the first camera before dra

Question 373289: 4. A quality-control procedure for testing ready-flash disposable cameras consists of drawing 2 cameras at random from each lot of 100 without replacing the first camera before drawing the second. If both are defective, the entire lot is rejected. The lot contains 10 defective cameras. Since we are drawing the cameras at random assume that each camera in the lot has an equal chance of being drawn. A) What is the probability of getting a defective camera on the first draw? B) What is the probability of getting a defective camera on the second draw if the first camera was defective? C) What is the probability that both cameras are defective?
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
A) 10/100 = 1/10
.
B) 9/99 = 1/11
.
C) 1/10 * 1/11 = 1/110
.
Ed
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