Question

Question 7.7. Carmela randomly selected 65 stamps from a stamp collection. Eleven of these were commemorative stamps. What is the interval estimate for the proportion of commemorative stamps in the entire collection if the sampling method had a margin of error of 0.025?
(Points : 4)
(0.415, 0.465)

(0.145, 0.195)

(0.085, 0.135)

(0.035, 0.085)
a few moments ago

Answer 1

@bruhhh

Answer 2

@lalithavasanth

Answer 3

Do 11/65
Your two answers will be 11/65+0.025 and 11/65-0.025
Hope this helps :)

Answer 4

for which one?

Answer 5

Oh whoops, the first! I didn't even see the second lol

Answer 6

hmm i dont get what your saying for the first?

Answer 7

There's 65 total stamps. Totals usually go on the bottom of a fraction. The area of focus (the 11 commemorative) goes on top. So that's why it's 11/65. Which is 11 divided by 65, which equals 0.170.
You have to add the marginal error (0.025) and then subtract it and those are your two answers.

Answer 8

can u simplify it for me plz

Answer 9

Yep :)
so 11/65=0.170
Subtracting 0.025=0.145
Adding 0.025=0.195
So your answer is (0.145,0.195), so it's B

Answer 10

Thank You So Much, and how abou the second?

Answer 11

I honestly have no idea about the second lol are you in statistics?

Answer 12

Yes lol

Answer 13

Me too lol I don't think I'm that far. I'm in sampling, but I don't get why it says theyre numbered through 42 but there's only 40 numbers there

Answer 14

If I were you, I'd make it a whole new question and maybe retag so someone can try to help ^.^
Good luck!!

Answer 15

Thank You!