
Intro Stats
4th Edition
ISBN: 9780321825278
Author: Richard D. De Veaux, Paul F. Velleman, David E. Bock
Publisher: PEARSON
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Question
Chapter R, Problem 3.24RE
a.
To determine
Diagram the given experimental design.
b.
To determine
Identify the factors of the given study.
Identify the levels of each factor.
c.
To determine
Identify the number of treatments of the given study.
d.
To determine
Find the response variable in the given experimental design.
e.
To determine
Explain whether the experiment conducted by researcher is single blind or double blind.
f.
To determine
Explain any situation for the experimental design to have bias.
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To evaluate the success of a 1-year experimental program designed to increase the mathematical achievement of underprivileged high school seniors, a random sample of participants in the program will be selected and their mathematics scores will be compared with the previous year’s statewide average of 525 for underprivileged seniors. The researchers want to determine whether the experimental program has increased the mean achievement level over the previous year’s statewide average. If alpha=.05, what sample size is needed to have a probability of Type II error of at most .025 if the actual mean is increased to 550? From previous results, sigma=80.
Chapter R Solutions
Intro Stats
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