In 2002, there were 2,058,000 male and 1,964,000 female live births. It makes no sense to calculate a confidence interval for the percent of male births in the United States for that year. Why not

inference is unnecessary for whole population.

Step-by-step explanation:

As per the question it is mentioned that in the year 2002, there were 2,058,000 male and 1,964,000 female also there is no need to determine the confidence interval for a male birth percentage in the united states for the same year as the inference is not necessary for the overall population

And, the same is to be considered

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

what i would say the best answer is a. 40.5