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Magesh · Answer 1 · 2023-02-28T15:53:44+0000

The probability that the light bulb is defective is as follows.

On the other hand, the probability that the light bulb is not defective is as follows.

$P(\text{not defective})=1-0.15=0.85$

To identify the probabiliy that at least one is defective, we have the following:

$\begin{gathered} P(\text{at least 1 is defective})=1-P(\text{5 are not defective}) \\ =1-(0.85)^5 \\ \approx1-0.443705 \\ \approx0.556295 \\ \approx55.6295\% \end{gathered}$

Thus, the probability that at least one is defective is about 55.63%.

Here's a picture of the explanation and the answer:

You purchased a five-pack of new light bulbs that were recalled because 15% of the-example-1

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