Answer:2
Step-by-step explanation: The line meets up at the y axis at 2
The answer is 78
Explanation:
65 / 5 = 13
(13 = 1/6)
13*6 = 78
Answer:
Pr(X >42) = Pr( Z > -2.344)
= Pr( Z< 2.344) = 0.9905
Step-by-step explanation:
The scenario presented can be modeled by a binomial model;
The probability of success is, p = 0.65
There are n = 80 independent trials
Let X denote the number of drivers that wear a seat belt, then we are to find the probability that X is greater than 42;
Pr(X > 42)
In this case we can use the normal approximation to the binomial model;
mu = n*p = 80(0.65) = 52
sigma^2 = n*p*(1-p) = 18.2
Pr(X >42) = Pr( Z > -2.344)
= Pr( Z< 2.344) = 0.9905
C. 4x + y = 21
4(3) + 9 = 21
12 + 9 = 21
21 = 21
