A recent survey of U.S. adults found that 75% would pay more for an environmentally friendly product. You randomly select 12 adults and ask them if they would pay more for environmentally friendly products. Find the probability that exactly 5 adults say they would pay more for environmentally friendly products. Round your answer to three decimal places.
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the probability of 5 adults in 12 adults is approximately 0.416
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A recent survey of U.S. adults found that 75% would pay more for an environmentally friendly product.
Among randomly selected 12 adults and asked them if they would pay more for environmentally friendly products.
The probability that exactly 5 adults say they would pay more for environmentally friendly products is,
P (E) = 5 / 12 × 75 / 100
P (E) = 375 / 1200 = 75 / 240 = 15 / 48
∴ P (E) = 5 / 16 = 0.3125
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