STAT. FOR BEHAVIORAL SCIENCES WEBASSIGN
3rd Edition
ISBN: 9781544317823
Author: PRIVITERA
Publisher: Sage Publications
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Chapter 8, Problem 13CAP
To determine
Explain the reason for the statement “The population standard deviation is always larger than the standard error when the
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Students have asked these similar questions
3. (i) Consider the following R code:
wilcox.test(UK Supermarkets $Salary ~ UKSupermarkets $Supermarket)
(a) Which test is being used in this code?
(b) What is the name of the dataset under consideration?
How would be adapt this code if we had ties? What other command
can be used which deals with ties?
(ii) Consider the following R code:
install packages("nortest")
library(nortest)
lillie.test (Differences)
(a) Assuming the appropriate dataset has been imported and attached,
what is wrong with this code?
(b) If this code were to be corrected, what would be determined by run-
ning it?
[3 Marks]
1. (i) Explain the difference in application between the Mann-Whitney U test
and the Wilcoxon Signed-Rank test, i.e. in which scenarios would each test be
used?
(ii) What is the main procedure underlying these nonparametric tests?
[3 Marks]
You may need to use the appropriate appendix table or technology to answer this question.
You are given the following information obtained from a random sample of 4 observations.
24
48
31
57
You want to determine whether or not the mean of the population from which this sample was taken is significantly different from 49. (Assume the population is normally distributed.)
(a)
State the null and the alternative hypotheses. (Enter != for ≠ as needed.)
H0:
Ha:
(b)
Determine the test statistic. (Round your answer to three decimal places.)
(c)
Determine the p-value, and at the 5% level of significance, test to determine whether or not the mean of the population is significantly different from 49.
Find the p-value. (Round your answer to four decimal places.)
p-value =
State your conclusion.
Reject H0. There is insufficient evidence to conclude that the mean of the population is different from 49.Do not reject H0. There is sufficient evidence to conclude that the…
Chapter 8 Solutions
STAT. FOR BEHAVIORAL SCIENCES WEBASSIGN
Ch. 8.1 - Prob. 1.1LCCh. 8.1 - Prob. 1.2LCCh. 8.2 - Prob. 2.1LCCh. 8.2 - Prob. 2.2LCCh. 8.2 - Prob. 2.3LCCh. 8.2 - Prob. 2.4LCCh. 8.2 - Prob. 2.5LCCh. 8.3 - Prob. 3.1LCCh. 8.3 - Prob. 3.2LCCh. 8.4 - Prob. 4.1LC
Ch. 8.4 - Prob. 4.2LCCh. 8.4 - Prob. 4.3LCCh. 8.4 - Prob. 4.4LCCh. 8.6 - Prob. 5.1LCCh. 8.6 - Prob. 5.2LCCh. 8.6 - Prob. 5.3LCCh. 8.6 - Prob. 5.4LCCh. 8.7 - Prob. 6.1LCCh. 8.7 - Prob. 6.2LCCh. 8.8 - Prob. 7.1LCCh. 8.8 - Prob. 7.2LCCh. 8.8 - Prob. 7.3LCCh. 8.8 - Prob. 7.4LCCh. 8 - Prob. 1FPCh. 8 - Prob. 2FPCh. 8 - Prob. 3FPCh. 8 - Prob. 4FPCh. 8 - Prob. 5FPCh. 8 - Prob. 6FPCh. 8 - Prob. 7FPCh. 8 - Prob. 8FPCh. 8 - Prob. 9FPCh. 8 - Prob. 10FPCh. 8 - Prob. 11FPCh. 8 - Prob. 12FPCh. 8 - Prob. 13CAPCh. 8 - Prob. 14CAPCh. 8 - Prob. 15CAPCh. 8 - Prob. 16CAPCh. 8 - Prob. 17CAPCh. 8 - Prob. 18CAPCh. 8 - Prob. 19CAPCh. 8 - Prob. 20CAPCh. 8 - Prob. 21CAPCh. 8 - Prob. 22CAPCh. 8 - Prob. 23CAPCh. 8 - Prob. 24CAPCh. 8 - Prob. 25CAPCh. 8 - Prob. 26CAPCh. 8 - Prob. 27CAPCh. 8 - Prob. 28CAPCh. 8 - Prob. 29PRCh. 8 - Prob. 30PRCh. 8 - Prob. 31PRCh. 8 - Prob. 32PRCh. 8 - Prob. 33PRCh. 8 - Prob. 34PR
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