MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Select the correct null hypothesis, H0, and alternative hypothesis, Ha, in symbolic form.

A market research firm uses a sample of individuals to rate the opinions of a certain product before and after the individuals saw a new television commercial for the product. Opinion ratings were on a 0 to 10 scale with higher values indicating a positive opinion, lower values indicating a negative opinion, and 5 indicating a neutral opinion. The firm wants to know if viewing the commercial has changed the mean consumer opinion rating.

A. H0:μd≤5,    Ha:μd>5
B. H0:μ≠0,   Ha:μ=0
C. H0:μ≤5,    Ha:μ>5
D. H0:μ=0,    Ha:μ≠0
E. H0:μd=0,    Ha:μd≠0
F. ?0:??≠0H0:μd≠0,   ??:??=0  Ha:μd=0

 

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