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Allisa [31]
3 years ago
5

A sample of 4 different calculators is randomly selected from a group containing 1212 that are defective and 3333 that have no d

efects. find the probability that at least one of the calculators is defective. round to the nearest thousandth.
Mathematics
1 answer:
marissa [1.9K]3 years ago
3 0
There are 45C4 = 148,995 ways to choose 4 calculators out of a group of 45.
There are 33C4 = 40,920 ways to choose 4 calculators that are not defective.

The probability that at least one is defective is (148,995 -40,920)/148,995 ≈ 0.725.
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<u>Answer:</u>

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2)Next, you would find the probability of pulling out a green marble. Using the same process that we used to find the probability of pulling out a white marble, we would find the answer to be 3/10. All that we did here was <em>green marbles/total marbles</em>. By filling that in we got 3/10 for the probability of pulling out a green marble.

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