Bundle: Statistics for Business & Economics, Loose-leaf Version, 13th + MindTap Business Statistics with XLSTAT, 2 terms (12 months) Printed Access Card
13th Edition
ISBN: 9781337127264
Author: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams, Jeffrey D. Camm, James J. Cochran
Publisher: Cengage Learning
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Textbook Question
Chapter 13.2, Problem 3E
Refer to exercise 2.
- a. what hypotheses are implied in this problem?
- b. At the α = .05 level of significance, can we reject the null hypothesis in part (a)? Explain.
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Does ivy grow better in areas with more sun versus in shady areas? Formulate one null (H0) and one
alternative (H1) hypothesis.
A researcher selects a sample and administers a treatment for anxiety to the individuals in the sample. If the sample is used for a hypothesis test, what does the null hypothesis ( H 0) put forth about the treatment?
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b.
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The following table contains the number of successes and failures for three categories of a variable. Test whether the proportions are equal for each category at the
α=0.1
level of significance.
Category 1
Category 2
Category 3
Failures
32
51
57
Successes
39
54
73
State the hypotheses. Choose the correct answer below.
A.
H0:
The
categories of the variable
and
success and failure
are independent.
H1:
The
categories of the variable
and
success and failure
are dependent.
B.
H0:
The
categories of the variable
and
success and failure
are dependent.
H1:
The
categories of the variable
and
success and failure
are independent.
C.
H0:
p1=p2=p3
H1:
At least one of the proportions is different from the others.
D.
H0:
μ1=E1
and
μ2=E2
and
μ3=E3
H1:
At least one mean is different from what is expected.
What is the P-value?
nothing
(Round to three decimal places as needed.)
What conclusion can be…
Chapter 13 Solutions
Bundle: Statistics for Business & Economics, Loose-leaf Version, 13th + MindTap Business Statistics with XLSTAT, 2 terms (12 months) Printed Access Card
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