Answered: 8. When you get a surprisingly low… | bartleby

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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Question #8 part A and B

8. When you get a surprisingly low price on a product
do you assume that you got a really good deal or that
you bought a low-quality product? Research indicates
that
you are more likely to associate low price and low
quality if someone else makes the purchase rather than
yourself (Yan & Sengupta, 2011). In a similar study,
n = 16 participants were asked to rate the quality of
low-priced items under two scenarios: purchased by a
friend or purchased yourself. The results produced a
mean difference of Mp = 2.6 and SS = 135, with self-
purchases rated higher.
a. Is the judged quality of objects significantly differ-
ent for self-purchases than for purchases made by
others? Use a two-tailed test with a = .05.
b. Compute Cohen's d to measure the size of the
treatment effect.

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