Basic Business Statistics, Student Value Edition
14th Edition
ISBN: 9780134685113
Author: Mark L. Berenson, David M. Levine, David F. Stephan, Kathryn Szabat
Publisher: PEARSON
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Textbook Question
Chapter 12, Problem 33PS
From Problem 12.32 , at the 0.05 level of significance determine the lower-tail critical value for the Wilcoxon rank sum test statistic,
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Students have asked these similar questions
3. For the data in the source table, what decision can be made about the hypotheses being tested?
Source
df
F
2
4
Between-groups
Subjects
Within-groups
Total
O
SS
10.1
7.4
8.5
26
d.
8
14
Oa. Fail to reject the null hypothesis and conclude that there is no effect of the independent variable.
Ob. Fail to reject the null hypothesis because the F statistic does not exceed the critical cutoff.
Oc. Reject the null hypothesis and conclude that the independent variable has no effect.
MS
5.05
1.85
1.063
Reject the null hypothesis and conclude that there are differences among the levels of the
independent variable.
A dietitian wishes to see if a person’s cholesterol level will be changed if the diet is supplemented by a certain mineral. Four subjects were pre-tested, and they took the mineral supplement for a 6-week period. The results are shown in the table. Is there sufficient evidence to conclude that the population mean of cholesterol levels has been changed after six weeks at α=0.2α=0.2? Assume that the differences are from an approximately normally distributed population.
Subject
Cholestrol Level (mg/dl)
Cholestrol Level after 6 Weeks (mg/dl)
dd
¯dd¯
(d−¯d)2(d-d¯)2
1
206
217
11
2
219
184
-35
3
202
204
2
4
213
205
-8
Total
-30
a) Calculate the mean, the sum of the squared deviation from the mean, and the standard deviation of differences. Do not include the unit for each answer:
¯d=d¯= (do not round)
∑(d−¯d)2=∑(d-d¯)2= (do not round)
sd=sd= (rounded to one decimal place)
b) Perform the hypothesis test in the following steps:
Step 1.…
A scientist studying local lakes claims that there is a linear relationship between a lake’s level of mercury and the lake’s depth. The scientist collected data to test the claim at a significance level of α=0.01. The following hypotheses were tested.
H0:β1=0Ha:β1≠0
The test yielded a t-value of 2.7 and a p-value of 0.012. Which of the following is a correct conclusion about the scientist’s claim?
The null hypothesis is rejected since 0.012>0.01. There is sufficient evidence to suggest that there is a linear relationship between a lake’s level of mercury and the lake’s depth.
A
The null hypothesis is not rejected since 0.012>0.01. There is sufficient evidence to suggest that there is a linear relationship between a lake’s level of mercury and the lake’s depth.
B
The null hypothesis is rejected since 0.012>0.01. There is not sufficient evidence to suggest that there is a linear relationship between a lake’s level of mercury and the lake’s depth.…
Chapter 12 Solutions
Basic Business Statistics, Student Value Edition
Ch. 12 - Determine the critical value of 2 with 1 degree of...Ch. 12 - Determine the critical value of 2 with 1 degree of...Ch. 12 - Use the following contingency table: a. Compute...Ch. 12 - Use the following contingency table: a. Compare...Ch. 12 - An lpsos poll asked 1,004 adults “If purchasing...Ch. 12 - Prob. 6PSCh. 12 - Prob. 7PSCh. 12 - The Society for Human Resource Management (SHRM)...Ch. 12 - What Social media tools do marketers commonly use?...Ch. 12 - Docs co-browsing have positive effects on the...
Ch. 12 - Consider a contingency table, with two rows and...Ch. 12 - Use the following contingency table: a. Compute...Ch. 12 - Use the following contingency table: a. Compute...Ch. 12 - How common are financial cost or contractual...Ch. 12 - Business sensor technology provides a way for...Ch. 12 - Prob. 16PSCh. 12 - Repeat (a) and (b) of Problem 12.16, assuming that...Ch. 12 - Prob. 18PSCh. 12 - The MSCI 2016 Survey of Women of Boards Survey...Ch. 12 - Prob. 20PSCh. 12 - Prob. 21PSCh. 12 - Prob. 22PSCh. 12 - A Gallup survey across generations of workers...Ch. 12 - How often do Facebook users post? A study by the...Ch. 12 - What makes sales leaders tick? Mercuri...Ch. 12 - PwC takes a closer look at what CEOs are looking...Ch. 12 - Using Table E.6, determine the lower-and...Ch. 12 - Using Table E.6, determine the lower-tail critical...Ch. 12 - Prob. 29PSCh. 12 - Prob. 30PSCh. 12 - Prob. 31PSCh. 12 - Prob. 32PSCh. 12 - From Problem 12.32 , at the 0.05 level of...Ch. 12 - In Problems 12.32 and 12.33, what is your...Ch. 12 - A vice president for marketing recruits 20 college...Ch. 12 - Prob. 36PSCh. 12 - Is there a difference in the satisfaction rating...Ch. 12 - The management of a hotel has the business...Ch. 12 - Prob. 39PSCh. 12 - Brand valuations are critical to CEOs, financial...Ch. 12 - A bank with a branch located in a commercial...Ch. 12 - Prob. 42PSCh. 12 - Prob. 43PSCh. 12 - Prob. 44PSCh. 12 - A pet food company has the business objective of...Ch. 12 - A hospital conducted a study of the waiting time...Ch. 12 - Prob. 47PSCh. 12 - An advertising agency has been hired by a...Ch. 12 - Prob. 49PSCh. 12 - The more costly and time consuming it is to export...Ch. 12 - Prob. 51PSCh. 12 - Prob. 52PSCh. 12 - Prob. 53PSCh. 12 - Prob. 54PSCh. 12 - Prob. 55PSCh. 12 - Prob. 56PSCh. 12 - Prob. 57PSCh. 12 - Prob. 58PSCh. 12 - Prob. 59PS
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