Open study

is now brainly

With Brainly you can:

  • Get homework help from millions of students and moderators
  • Learn how to solve problems with step-by-step explanations
  • Share your knowledge and earn points by helping other students
  • Learn anywhere, anytime with the Brainly app!

A community for students.

A local board of education conducted a survey of residents in the community concerning a property tax levy on the coming local ballot. They randomly selected 850 residents in the community and contacted them by telephone. Of the 850 residents surveyed, 410 supported the property tax levy. Let p represent the proportion of residents in the community that support the property tax levy. Reference: Ref 18-3 A 90% confidence interval for p is A. 0.4489 to 0.5159. B. 0.4543 to 0.5105. C. 0.4487 to 0.5161. D. 0.4463 to 0.5185.

Mathematics
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

Join Brainly to access

this expert answer

SEE EXPERT ANSWER

To see the expert answer you'll need to create a free account at Brainly

let q = sample proportion q = x/n = 410/850 = 0.48235 Now use the formula E = C * sqrt( (q(1-q))/n ) to find the margin of error E = C * sqrt( (q(1-q))/n ) E = 1.645 * sqrt( ( 0.48235(1- 0.48235))/850 ) E = 0.0281939 ------------------------------------------------ The 90% confidence interval is then ( q - E , q + E ) ( 0.48235 - 0.0281939 , 0.48235 + 0.0281939 ) ( 0.4541561, 0.5105439 ) ( 0.4542, 0.5105 ) So it's very close to B, and it's just off because of rounding errors.

Not the answer you are looking for?

Search for more explanations.

Ask your own question

Other answers:

haha I see I messed up I got .43 and wondered why... Thanks Jim as always :D

Not the answer you are looking for?

Search for more explanations.

Ask your own question