HW9 - HW9(TTh ppl due Tu 11/27 MWF ppl due W 11/28...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
HW9 (TTh ppl – due Tu, 11/27, MWF ppl – due W, 11/28) Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .UMID . . . . . . . . . . . . . . . . . . . . . . . Lecture: MWF TTh GSI: Carrie Katherine Lin Lab Section # . Three “problem types”: 1) Setting up Ho & H 1 about p, providing the test statistic, its p-value, and conclusion, 2) calculating a CI on p and interpreting it, and 3) providing a necessary sample size to be 95% confident that your estimate will have a certain margin of error, e.g., +/- 3%. 1 – Suppose the AA News took a random sample of 300 residents and learned that 168 were opposed to the further development of condos in the downtown area. a. Define the population parameter p, i.e., let p = b. Given the AA News’ estimate is 56% (or 0.56), what is the 95% CI? Show your work with substitutions into the formula. 95% CI = ( . . . . . . . . . . , . . . . . . . . . . ) c. Does this CI indicate that the AA News can claim a majority of AA residents are opposed? Circle one: Yes No Please provide a brief rationale d. A 99% CI would be (circle one) wider narrower. e. The Detroit paper wants to replicate this survey. How large would the sample be to be 95%
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern