Bundle: Statistics for the Behavioral Sciences, Loose-leaf Version, 10th + Aplia, 1 term Printed Access Card
10th Edition
ISBN: 9781337129039
Author: Frederick J Gravetter, Larry B. Wallnau
Publisher: Cengage Learning
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Chapter 1, Problem 10P
10. Weinstein, McDermott, and Roediger (2010) conducted an experiment to evaluate the effectiveness of different study strategies. One part of the study asked students to prepare for a test by reading a passage. In one condition, students generated and answered questions after reading the passage. In a second condition, students simply read the passage a second time.
All students were then given a test on the passage material and the researchers recorded the number of correct answers.
a. Identify the dependent variable for this study.
b. Is the dependent variable discrete or continuous?
c. What scale of measurement (nominal, ordinal, interval, or ratio) is used to measure the dependent variable?
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In a study about learning styles, researchers used a group of 64 elementary school students who volunteered to be part of the study. The researchers gave each student a pre-test and based upon the results, they divided them into 32 pairs of similarly scoring students. School administrators then randomly assigned one student from each pair to mathematics instruction online while the other student received in-person instruction in a traditional classroom. At the end of the year, all 64 students received a mathematics assessment, measured on a 100-point scale.
The researchers calculated the difference (in person −− online) in the mathematics assessment scores for each pair of students. The 32 differences had a mean of 15 and a standard deviation of 3.9 points.
Construct and interpret a 95% confidence interval for the mean difference (in person −− online) in the mathematics assessment scores for all pairs of students like these who learn math either face-to-face or online.
In a study about learning styles, researchers used a group of 64 elementary school students who volunteered to be part of the study. The researchers gave each student a pre-test and based upon the results, they divided them into 32 pairs of similarly scoring students. School administrators then randomly assigned one student from each pair to mathematics instruction online while the other student received in-person instruction in a traditional classroom. At the end of the year, all 64 students received a mathematics assessment, measured on a 100-point scale.
The researchers calculated the difference (in person −− online) in the mathematics assessment scores for each pair of students. The 32 differences had a mean of 15 and a standard deviation of 3.9 points.
Construct and interpret a 95% confidence interval for the mean difference (in person −− online) in the mathematics assessment scores for all pairs of students like these who learn math either face-to-face or online.
24)
Some research has shown that swearing can help reduce ratings of pain (Stephens, Atkins, & Kingston, 2009). In one such study, each participant was asked to plunge a hand into icy water and keep it there as long as the pain would allow. In one condition, the participants repeated their favorite curse words while their hands were in the water. In the other condition, the participants repeated a neutral word. In addition to lowering the participants’ perception of pain, swearing also increased the amount of time they were able to tolerate the pain. Data similar to the results obtained in their study are shown in the following table.
Amount of Time (in Seconds)
Participant
Swear Words
Neutral Words
1
94
59
2
70
61
3
52
47
4
83
60
5
46
35
6
117
92
7
69
53
8
39
30
9
51
56
10
73
61
Do these data indicate a significant difference in pain tolerance between the two conditions?…
Chapter 1 Solutions
Bundle: Statistics for the Behavioral Sciences, Loose-leaf Version, 10th + Aplia, 1 term Printed Access Card
Ch. 1 - A researcher interested in the texting habits of...Ch. 1 - 2. Define the terms population, sample, parameter...Ch. 1 - WW3. Statistical methods are classified into two...Ch. 1 - Define the concept of sampling error and explain...Ch. 1 - Describe the data for a correlational research...Ch. 1 - Describe how the goal of an experimental research...Ch. 1 - Stephens, Atkins, and Kingston (2009) conducted an...Ch. 1 - 8. 2 and age 4 compared to children who drank...Ch. 1 - Gentile, Lynch, Linder, and Walsh (2004) surveyed...Ch. 1 - 10. Weinstein, McDermott, and Roediger (2010)...
Ch. 1 - A research study reports that alcohol consumption...Ch. 1 - 12. In an experiment examining the effects Tai Chi...Ch. 1 - A tax form asks people to identify their annual...Ch. 1 - Four scales of measurement were introduced in this...Ch. 1 - Knight and Haslam (2010) found that office workers...Ch. 1 - 16. Explain why honesty is a hypothetical...Ch. 1 - Ford and Torok (2008) found that motivational...Ch. 1 - 18 . 18. For the following scores, find the value...Ch. 1 - 19. For the following scores, find the value of...Ch. 1 - 20. For the following scores, find the value of...Ch. 1 - Two scores, X and Y, are recorded for each of n =...Ch. 1 - 22. Use summation notation to express each of the...Ch. 1 - 23. For the following set of scores, find the...
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