To estimate the percentage of defects in a recent manufacturing batch, a quality control manager at Ford selects every 18th truck that comes off the assembly line starting with the ninth until she obtains a sample of 60 trucks. What type of sampling is used?A. StratifiedB. Systematic C. Simple random D. ClusterE. Convenience

Systematic sampling.

Step-by-step explanation:

The systematic sampling is a type of random sampling in which a unit is selected from k units and after this every kth unit is selected until population is serially numbered from 1 to N arranged in a systematic way.

The statement shows that every 18th truck is selected until a sample of 60 trucks is selected. It shows that a systematic random sample is obtained with k=18 and thus, systematic sampling is used.

B) Systematic

Step-by-step explanation:

The guy above me is correct, i can confirm.

-3

step-by-step explanation:

a drawing really does here:

so i draw the horizontal line y=2 and the vertical line x=-2 at this intersection i put b (this is where my right angle is going to be).   so point b is at (-2,2).   point a is 5 units long and is also on y=2 so this point has to be (3,2) or (-7,2) -doesn't matter i will go with (3,2).

now we know c is at (-2,y) we don't know the y yet bet we know that c is on x=-2.

we have the area of the triangle is .5bh=12.5

we know the base length is 5 (ab)

we have the height is (2-y) if you look at your

plug in

.5(5)(2-y)=12.5

solve for y to get the y-coordinate for c

2.5(2-y)=12.5

divide both sides by 2.5 giving:

2-y=5

now subtract 2 on both sides

-y=3

y=-3

answer: on kudzu, being female and being green are independent events.

step-by-step explanation: