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A researcher wishes to conduct a study of the color preferences of new car buyers. Suppose that 60% of this population prefers the color green. If 12 buyers are randomly selected, what is the probability that exactly 9 buyers would prefer green

Respuesta :

The probability that exactly 9 buyers would prefer green is 0.1408

We will use the Binomial probability formula to find the answer

The formula is given by ⁿCₓ (p)ˣ (1-p)ⁿ-ˣ

We have

n, the number of trial = 12

x, the sample we aim to try = 9

p, the probability of success = 0.6

Substitute these values into the formula

[tex]P(9)= ^{12}C_{9} (0.6)^{9} (1-0.6)^{12-9}[/tex]

P(9) = 0.1408 (rounded to four decimal places)

Hence, The probability that exactly 9 buyers would prefer green is 0.1408

Learn more about Probability here https://brainly.com/question/23286309

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