If the probability that the Islanders will beat the Rangers in a game is 18%, what is the probability that the Islanders will win exactly one out of six games in a series against the Rangers? Round your answer to the nearest thousandth.Answer:
Q. If the probability that the Islanders will beat the Rangers in a game is 18%, what is the probability that the Islanders will win exactly one out of six games in a series against the Rangers? Round your answer to the nearest thousandth.Answer:
Identify Formula and Values: Identify the binomial probability formula and the values of n, k, and p. The binomial probability formula is P(X=k)=C(n,k)⋅(p)k⋅(1−p)(n−k), where: - n is the number of trials, - k is the number of successes, - p is the probability of success on a single trial. For this problem: n=6 (since there are six games), k=1 (since we want to find the probability of exactly one win), p=0.18 (since the probability of the Islanders winning a game is 18%).
Calculate Binomial Coefficient: Calculate the binomial coefficient C(n,k). The binomial coefficient C(n,k) is calculated using the formula k!(n−k)!n!. For n=6 and k=1, we have: C(6,1)=1!(6−1)!6!=1×5!6=1206=201=0.05.
Calculate Probability of One Win: Calculate the probability of exactly one win using the binomial probability formula.Substitute n=6, k=1, and p=0.18 into the formula P(X=k)=C(n,k)⋅(p)k⋅(1−p)(n−k):P(X=1)=C(6,1)⋅(0.18)1⋅(1−0.18)(6−1).
Solve Probability Expression: Solve the probability expression.First, calculate (0.18)1, which is simply 0.18.Next, calculate (1−0.18)(6−1), which is (0.82)5.(0.82)5=0.82×0.82×0.82×0.82×0.82≈0.32890368.Now, multiply C(6,1), (0.18)1, and (0.82)5 together:P(X=1)=0.05×0.18×0.32890368≈0.00296553.
Round to Nearest Thousandth: Round the answer to the nearest thousandth.P(X=1)≈0.00296553 rounded to the nearest thousandth is 0.003.
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