Car color preferences change over the years and according to the particular mode
ID: 3061139 • Letter: C
Question
Car color preferences change over the years and according to the particular model that the customer selects. in a recent year suppose 10% of all luxury cars sold were black if 20 cars of that year and type are randomally selected find the following probabilities. A) at least 2 cars are black. B) exactly 5 cars are black. C) calculate the mean number of cars that are black. Car color preferences change over the years and according to the particular model that the customer selects. in a recent year suppose 10% of all luxury cars sold were black if 20 cars of that year and type are randomally selected find the following probabilities. A) at least 2 cars are black. B) exactly 5 cars are black. C) calculate the mean number of cars that are black. A) at least 2 cars are black. B) exactly 5 cars are black. C) calculate the mean number of cars that are black.Explanation / Answer
solution : Given that p = 10% = 0.1 , n = 20
Formula = P[k] = nCk *p^k *q^(n-k)
A) P(X >= 2) = 0.60825
B) P(X = 5) = 0.03192
C) mean = n*p = 20*0.1 = 2.