In a sample of 200 bottles at a factory, 38 had major defects. the sampling method had a margin of error of 0.02. what is the interval estimate for the proportion that would have defects in the form (lower limit, upper limit) ? a. (0.17, 0.21) b. (0.19, 0.21) c. (0.16, 0.20) d. (0.15, 0.19)

a.(0.17; 0.21)

Step-by-step explanation:

The confidence interval is always centered at the mean of the sample you take. In this case, the average value of the sample is 38/200 = 0.19. The only interval of length 0.04 centered at 0.19 is (0.17; 0.21). Note that the intervals should have length 0.04 in order for the margin of error to be 0.02.

1.3

step-by-step explanation:

3x2=6   9x+6

bring down the 6 on both sides

6+6=12

12= 9x

divide by 9

12/9 =

1.3 =x

b. would be the answer : )

step-by-step explanation:

step 1: add -16x to both sides.

16x−4y+−16x=64+−16x  

−4y=−16x+64

step 2: divide both sides by -4.

−4y /-4 = -16x + 64/-4

answer:   y=4x−16

hope i'm right