Bundle: Essentials Of Statistics For The Behavioral Sciences, 9th + Mindtap Psychology, 1 Term (6 Months) Printed Access Card
9th Edition
ISBN: 9781337582582
Author: Frederick J Gravetter, Larry B. Wallnau, Lori-Ann B. Forzano
Publisher: Cengage Learning
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Textbook Question
Chapter 13, Problem 10P
A published report of a repealed-measures research study includes the following description of the statistical analysis: “The results show significant differences among the treatment conditions. F(2, 26) - 4.87, p < 05 ”
- a. How many treatment conditions were compared in the study?
- b. How many individuals participated in the study?
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4. (5 pts) Conduct a chi-square contingency test (test of independence) to assess whether
there is an association between the behavior of the elderly person (did not stop to talk,
did stop to talk) and their likelihood of falling. Below, please state your null and
alternative hypotheses, calculate your expected values and write them in the table,
compute the test statistic, test the null by comparing your test statistic to the critical
value in Table A (p. 713-714) of your textbook and/or estimating the P-value, and
provide your conclusions in written form. Make sure to show your work.
Did not stop walking to talk
Stopped walking to talk
Suffered a fall
12
11
Totals
23
Did not suffer a fall | 2
Totals
35
37
14
46
60
T
Question 2
Parts manufactured by an injection molding process are subjected to a compressive strength test. Twenty samples
of five parts each are collected, and the compressive strengths (in psi) are shown in Table 2.
Table 2: Strength Data for Question 2
Sample Number
x1
x2
23
x4
x5
R
1
83.0
2
88.6 78.3 78.8
3
85.7
75.8
84.3
81.2 78.7 75.7 77.0
71.0 84.2
81.0
79.1
7.3
80.2 17.6
75.2
80.4
10.4
4
80.8
74.4
82.5
74.1 75.7 77.5
8.4
5
83.4
78.4
82.6 78.2
78.9
80.3
5.2
File Preview
6
75.3
79.9
87.3 89.7
81.8
82.8
14.5
7
74.5
78.0 80.8
73.4
79.7
77.3
7.4
8
79.2
84.4 81.5 86.0
74.5
81.1
11.4
9
80.5
86.2
76.2 64.1
80.2
81.4
9.9
10
75.7
75.2
71.1 82.1
74.3
75.7
10.9
11
80.0 81.5
78.4 73.8
78.1
78.4
7.7
12
80.6
81.8
79.3
73.8
81.7 79.4
8.0
13
82.7
81.3
79.1
82.0 79.5 80.9
3.6
14
79.2
74.9
78.6 77.7
75.3
77.1
4.3
15
85.5 82.1
82.8 73.4
71.7
79.1
13.8
16
78.8 79.6
80.2 79.1
80.8 79.7
2.0
17
82.1
78.2
18
84.5
76.9
75.5
83.5 81.2
19
79.0 77.8
20
84.5
73.1
78.2 82.1
79.2 81.1 7.6
81.2 84.4 81.6 80.8…
Name:
Lab Time:
Quiz 7 & 8 (Take Home) - due Wednesday, Feb. 26
Contingency Analysis (Ch. 9)
In lab 5, part 3, you will create a mosaic plot and conducted a chi-square contingency test to
evaluate whether elderly patients who did not stop walking to talk (vs. those who did stop)
were more likely to suffer a fall in the next six months. I have tabulated the data below.
Answer the questions below. Please show your calculations on this or a separate sheet.
Did not stop walking to talk
Stopped walking to talk Totals
Suffered a fall
Did not suffer a fall
Totals
12
11
23
2
35
37
14
14
46
60
Quiz 7:
1. (2 pts) Compute the odds of falling for each group. Compute the odds ratio for those
who did not stop walking vs. those who did stop walking. Interpret your result verbally.
Chapter 13 Solutions
Bundle: Essentials Of Statistics For The Behavioral Sciences, 9th + Mindtap Psychology, 1 Term (6 Months) Printed Access Card
Ch. 13.1 - Where are individual differences located in the...Ch. 13.1 - What happens to the variability due to individual...Ch. 13.2 - What happens during the second stage of a...Ch. 13.2 - Prob. 2LCCh. 13.2 - For the following data, what are the df values for...Ch. 13.2 - The results of a repeated-measures ANOVA are...Ch. 13.3 - Prob. 1LCCh. 13.3 - A repeated-measures ANOVA produced an F-ratio of F...Ch. 13.4 - A two-factor study with two levels of factor A and...Ch. 13.4 - Which of the following accurately describes an...
Ch. 13.4 - Prob. 3LCCh. 13.5 - Which of the following accurately describes the...Ch. 13.5 - In a two-factor analysis of variance, the F-ratio...Ch. 13.5 - The following table shows the results for a...Ch. 13 - What is the relationship between the F-ratio for a...Ch. 13 - A researcher conducts an experiment comparing four...Ch. 13 - A researcher conducts a repeated-measures...Ch. 13 - The following data were obtained from a...Ch. 13 - The following data represent the results of a...Ch. 13 - One of the advantages of a repeated-measures...Ch. 13 - The following summary table presents the results...Ch. 13 - The following summary table presents the results...Ch. 13 - A researcher use a repeated-measures ANOVA to...Ch. 13 - A published report of a repealed-measures research...Ch. 13 - The following data are from a repeated-measures...Ch. 13 - The following data are from a repeated-measures...Ch. 13 - In Problem 6 at the end of Chapter 11 (page 325),...Ch. 13 - Define each of the following terms: a. Factor b....Ch. 13 - Explain what happens during each of the two stages...Ch. 13 - For the data in the following matrix: a. Which two...Ch. 13 - The following matrix presents the results from an...Ch. 13 - The following matrix presents the results of a...Ch. 13 - A researcher conducts an independent-measures,...Ch. 13 - A researcher conducts an independent-measures,...Ch. 13 - The following results are from an...Ch. 13 - The following results are from an...Ch. 13 - Most sports injuries are immediate and obvious,...Ch. 13 - The following table summarizes the results from a...Ch. 13 - The following table summarizes the results from a...Ch. 13 - Earlier in this chapter we described a study by...
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