Solved by Expert Tutors
A professor tests whether the loudness of noise during an exam (low, medium, and high) is independent of exam grades (pass, fail). The following...
Solved by Expert Tutors
Question

A professor tests whether the loudness of noise during an exam (low,

medium, and high) is independent of exam grades (pass, fail). The following table shows the observed frequencies for this test.
  Noise Level  
Low Medium High
Exam Pass 19 16 8 43
Fail 8 5 10 23
  27 21 18 N = 66


(a) Conduct a chi-square test for independence at a 0.05 level of significance. (Round your answer to two decimal places.)
x^2obt = _____




Decide whether to retain or reject the null hypothesis.
Retain the null hypothesis.
Reject the null hypothesis.   


(b) Compute effect size using Cramer's V. (Round your answer to two decimal places.)
V = 




You may need to use the appropriate table in Appendix B to answer this question.

Step-by-step answer

llentesque dapibus effic


, ultrices ac magna. Fusce


ultrices ac magna. Fus

acinia pulvi

risus ante, dapibus a molestie consequat, ultrices ac magna.

fficitur laoreet. Nam risus a

ipsum dolor sit amet, consectetur adipiscing elit. Nam lacinia

s ante, dapibus a moles

e.png

ac,

et, consectetu

gec facfec facm ipsumlac,

acinia pulvinar to

chi obt.png

dictum vitae odio. Do


ultrices aclicitur laoreet. Nam risus a

rem ipsum dolor sit amet, cons

, ultrices ac magna. Fusce


dictum vitae odio. Donelm risus ante, dapibus a molestie consequat, ult

icitur laoreet. Nam risus ante, dapibus a

chi obt.png
r

Subscribe to view the full answer

Why Join Course Hero?

Course Hero has all the homework and study help you need to succeed! We’ve got course-specific notes, study guides, and practice tests along with expert tutors.

  • -

    Study Documents

    Find the best study resources around, tagged to your specific courses. Share your own to gain free Course Hero access.

    Browse Documents
  • -

    Question & Answers

    Get one-on-one homework help from our expert tutors—available online 24/7. Ask your own questions or browse existing Q&A threads. Satisfaction guaranteed!

    Ask a Question