Question

Construct a confidence interval of the population proportion at the given level of confidence.

x=60, n=300, 90% confidence

The 90% confidence interval is (___,___).
(use ascending order. Round to three decimal places as needed.)

Answer 1

which part is parked?

Answer 2

*marked

Answer 3

find p^, and the rest is pretty much self explanatory

p^ = x/n , this becomes the "mean"

+- z sqrt(p^q^/n) is the interval about the mean

Answer 4

the part that's circled that says "How did they get this answer?"

Answer 5

i understand how to do the rest except that part.

Answer 6

nothing is circled in the file you provided

Answer 7

one sec

Answer 8

ok how's that?

Answer 9

much better :)

Answer 10

recall that everything under the humpback is equal to 1