I would Love help with this problem. number 15, letters A trough D it\'s a binom
ID: 3263088 • Letter: I
Question
I would Love help with this problem.
number 15, letters A trough D
it's a binomial probability problem.
Del ial Wil arrive within two 15. Industry standards suggest that 10% of new vehicles require warranty service within the first year Jones Nissan in Sumter, South Carolina, sold 12 Nissans yesterday a. What is the probability that none of these vehicles requires warranty service? b. What is the probability exactly one of these vehicles requires warranty service? first year Jones Nissan in Sunter, South Carolina, sold 12 Nissans yesterdayExplanation / Answer
Let X be the percent of new vehicles require warranty service within the first year.
= 0.10
n = 12
q = 1 - 0.10 = 0.90
a) No vehicle requires service: It is like 0 successes and 12 failures
P(X = 0) = 12C0 * (0.1)0 * (0.9)12 = 0.2824
b) Exactly one requires:
P(X = 1) = 12C1 * (0.1)1 * (0.9)11 = 0.3765
c) exactly 2 requires service:
P(X = 2) = 12C2 * (0.1)2 * (0.9)10 = 0.2301
d)
Mean = µ = 12*0.10 = 1.2
= sqrt(12*0.10*0.90) = 1.039