Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN: 9780079039897
Author: Carter
Publisher: McGraw Hill
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Transcribed Image Text:The effectiveness of advertising for two rival products (Brand X and
Brand Y) was compared. Market research at a local shopping center was
carried out, with the participants being shown adverts for two rival
brands of coffee, which they then rated on the overall likelihood of them
buying the product (out of 10, with 10 being "definitely going to buy th
product").
Brand X
Rating
342625
Brand Y 97 5 10 6 8
To test whether they have the same ratings, we use a = 0.05. What is
the test statistics Tobs = min{Tobs, obs} and the critical region?
(A) Tobs 2, CR = {T<5}.
(B) Tobs
=
23, CR = {T<7}.
(C) Tobs 34, CR = {T≥ 31}.
-
(D) Tobs =55, CR = {T> 29}.
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