Get comprehensive solutions to your problems with IDNLearn.com. Ask your questions and receive reliable, detailed answers from our dedicated community of experts.
Sagot :
The probability that exactly 7 are men out of 10 sports car owners who are randomly selected is 0.215 given that 60% of people who purchase sports cars are men. This can be obtained by using binomial distribution formula.
Calculate the required probability:
This question can be solved using binomial distribution formula.
The formula for binomial distribution is the following,
P(X) = ⁿCₓ pˣ qⁿ⁻ˣ
where,
n = number of trials(or the number being sampled)
x = number of success desired
p = probability of getting a success in one trial
q = 1 - p = probability of getting a failure in one trial
Here in the question it is given that,
⇒ 60% of people who purchase sports cars are men
This statements clearly means that probability of men purchase sports cars is 60%.
⇒ P(men purchasers) = p = 60% = 0.6
From this we can find the probability of women who purchase sports cars,
⇒ P(women purchasers) = q = 1 - p = 1 - 0.6 = 0.4
So we can find the probability that exactly 7 are men out of 10 sports car owners who are randomly selected
It is a binomial case with n = 10
By using the formula for binomial distribution we get,
P(X = 7) = ¹⁰C₇ × 0.6⁷ × 0.4³
P(X = 7) = 120 × 0.0279936 × 0.064
P(X = 7) = 0.21499
P(X = 7) = 0.215
Hence the probability that exactly 7 are men out of 10 sports car owners who are randomly selected is 0.215 given that 60% of people who purchase sports cars are men.
Learn more about binomial distribution here:
brainly.com/question/13634543
#SPJ1
Thank you for being part of this discussion. Keep exploring, asking questions, and sharing your insights with the community. Together, we can find the best solutions. Your questions deserve reliable answers. Thanks for visiting IDNLearn.com, and see you again soon for more helpful information.