The answer is 4 because anything times 0 is 0 and and 2x2 is 4
Answer:
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Step-by-step explanation:
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Using the hypergeometric distribution, it is found that there is a 0.0455 = 4.55% probability that both light bulbs failed the test.
The bulbs are chosen without replacement, and this is why the <u>hypergeometric distribution</u> is used to find the probability.
Hypergeometric distribution:
The parameters are:
- x is the number of successes.
- N is the size of the population.
- n is the size of the sample.
- k is the total number of desired outcomes.
In this problem:
- 12 bulbs, thus
- 3 failed the test, thus .
- 2 are selected, thus .
The probability that <u>both failed the test</u> is P(X = 2), thus:
0.0455 = 4.55% probability that both light bulbs failed the test.
A similar problem is given at brainly.com/question/24826394