1.One light bulb is selected at random from a lot of 100 light bulbs, of which 6% are defective. What is the probability that the light bulb selected is defective?
10pts!
10pts!
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Of the 100 light bulbs, 6% are defective, so that's 6 defective light bulbs. For this problem you don't need to choose one of those probabilities formulas because there is only one light bulb being selected. If there was 1 defective light bulb, the probability of selecting the defective bulb would be 1 out of 100, but there are 6 defective bulbs, so the probability of choosing a defective bulb goes up to 6 times 1 out of 100, or 6/100, which is 3/50.
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Probability
Total number of defective bulbs over total number of bulbs
In this case 6% of a hundred gives us 6 defective bulbs so
6/100 is the probability of grabbing a defective bulb from the lot. Reduce the fraction.
3/50
Total number of defective bulbs over total number of bulbs
In this case 6% of a hundred gives us 6 defective bulbs so
6/100 is the probability of grabbing a defective bulb from the lot. Reduce the fraction.
3/50
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6/100 = 0.06 ??