Problem
A box contains 5 defective and 195 non-defective cell phones. A quality control engineer selects 2 cell phones at random without replacement. What is the probability that exactly 1 is defective?
| A. 0.0190 | C. 0.0390 |
| B. 0.0490 | D. 0.0290 |
Dependent Events
Probability
Probability
For outcomes that are equally likely to occur:
$P = \dfrac{\text{Number of favorable outcomes}}{\text{Total number of possible outcomes}}$
If the probability of an event to happen is p and the probability for it to fail is q, then
$p + q = 1$
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