ECON 230 Workshop Proportions Ch 9

ECON 230 Workshop Proportions Ch 9 - Chap 9 — Hypothesis...

Info icon This preview shows page 1. Sign up to view the full content.

Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Chap. 9 — Hypothesis Test — Proportion — Class Practice 9.87. Suppose that in a recent sample of 1600 children, 224 were found to be living with at least 1 grandparent. At a 5% level of significance can you test the hypothesis t at the proportion is greater than 1 1%? /i\\ & Ho (J E A ‘ 1 “A. ‘4 §Jl (“lsh'l ital} baud 0"- “A ’2, 23335: +1.95 ' ' TS l'C’L’I .67qu “MPH A ‘ ng 2:?4? (.08 ,‘1505 0'? Slat: xWL TS dckuF.l|"‘ lib“ Q- .3»- (‘cg'mm W" “35‘" HO , E’V-“Ilrnl U5 ‘- “"93“ ("BC") '- om? . ”‘1“ {MW' at g dwt‘l fl ’ ‘Qoo ‘ \‘w-hs wl ,3? t8 . 9.88 According to a 2011 book, 45% of US. students show no gain in learning in their first 2 years. A recent sample of 1500 showed that this percentage is 38%. Test the hypothesis that this percentage is (a) lower than 45% (b) equal to 45W. Use the 1% level of significance. ...
View Full Document

  • Fall '12
  • AnnaTerzyan

{[ 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