SOLUTION: A researcher wishes to conduct a study of the color preferences of new car buyers. Suppose that 30% of this population prefers the color red. If 18 buyers are randomly selected, wh
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Question 1140271: A researcher wishes to conduct a study of the color preferences of new car buyers. Suppose that 30% of this population prefers the color red. If 18 buyers are randomly selected, what is the probability that at least 1 buyer would prefer red? Round your answer to four decimal places. Answer by ikleyn(52832) (Show Source):
The complement probability is that NO ONE buyer of 18 would prefer the red color, and it is = = 0.001628.
Hence, the probability under the question is 1 - 0.001628 = 0.9984 = 99.84%.