Statistics for The Behavioral Sciences (MindTap Course List)
10th Edition
ISBN: 9781305504912
Author: Frederick J Gravetter, Larry B. Wallnau
Publisher: Cengage Learning
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Chapter 10, Problem 12P
Recent research has demonstrated that music-based physical training for elderly people can improve balance, walking efficiency, and reduce the risk of falls (Trombetti et at., 2011). As part of the training, participants walked in time to music and responded to changes in the music’s rhythm during a 1-hour per week exercise program. After 6 months, participants in the training group increased their walking speed and their stride length compared to individuals in the control group. The following data are similar to the results obtained in the study.
| Exercise Group |
Stride Length
Stride Length
Do the results indicate a significant difference in the stride length for the two groups? Use a two-tailed test with
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From this table, conduct an one-way ANOVA. Calculate the F-ratio and p-value. Be sure to round your answers to three decimal places. Assume all population and ANOVA requirements are met.F-ratio: _____p-value: _____What is your final conclusion? Use a significance level of α=0.05. (Select one):
There is sufficient evidence that…
Recent research indicates that the effectiveness of antidepressant medication is directly related to the severity of the depression (Khan, Brodhead, Kolts & Brown, 2005). Based on pretreatment depression scores, patients were divided into four groups based on their level of depression. After receiving the antidepressant medication, depression scores were measured again and the amount of improvement was recorded for each patient. The following data are similar to the results of the study.
LowModerate
HighModerate
ModeratelySevere
Severe
0.3
1.2
2.2
1.8
3.8
1.7
1.4
2.8
3.2
0.4
0.6
2.6
2.3
1.2
1.6
2.6
2
3.2
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4.2
1.5
2.3
2.2
2.9
1.4
2.2
2.7
2.8
2.1
1.9
1.9
3.9
1.5
2.7
0.8
1.5
1
3
2.1
3.7
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0.9
2.4
1.9
2.7
3.2
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2.7
2.2
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1.2
2.4
1.7
3.2
1.3
2.2
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Chapter 10 Solutions
Statistics for The Behavioral Sciences (MindTap Course List)
Ch. 10 - Describe the basic characteristics of an...Ch. 10 - Describe what is measured by the estimated...Ch. 10 - One sample has SS=36 and a second sample has SS=18...Ch. 10 - One sample has SS=60 and a second sample has SS=48...Ch. 10 - ] 5. Two separate samples, each with n=15...Ch. 10 - Two separate samples receive different treatments....Ch. 10 - Research results suggest a relationship between...Ch. 10 - It appears that there is some truth to the old...Ch. 10 - Does posting calorie content for menu items affect...Ch. 10 - In 1974, Loftus and Palmer conducted a classic...
Ch. 10 - Recent research has shown that creative people are...Ch. 10 - Recent research has demonstrated that music-based...Ch. 10 - McAllister et al. (2012) compared varsity football...Ch. 10 - In the Chapter Preview we presented a study...Ch. 10 - In a classic study in the area of problem solving,...Ch. 10 - A researcher conducts an independent-measures...Ch. 10 - In a recent study, Piff, Kraus, Côté, Cheng, and...Ch. 10 - Describe the homogeneity of variance assumption...Ch. 10 - If other factors are held constant, explain how...Ch. 10 - As noted on page 304, when the two population...Ch. 10 - Two samples are selected from the sane population....Ch. 10 - For each of the following, assume that the two...Ch. 10 - For each of the following, calculate the pooled...
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