Statistics for The Behavioral Sciences (MindTap Course List)
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 7, Problem 20P

  1. Callahan (2009) conducted a study to evaluate the effectiveness of physical exercise programs for individuals with chronic arthritis. Participants with doctor-diagnosed arthritis either received a Tai Chi course immediately or were placed in a control group to begin the course 8 weeks later. At the end of the 8-week period, self-reports of pain were obtained for both groups. Data similar to the results obtained in the study are shown in the following table.

    Self-Reported Level of Pain
    Mean SE
    Tai Chi course 3.7 1.2
    No Tai Chi course 7.6 1.7

  • Construct a bar graph that incorporates all of the information in the table.

  • Looking at your graph, do you think that participation in the Tai Chi course reduces arthritis pain?

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    Chapter 7 Solutions

    Statistics for The Behavioral Sciences (MindTap Course List)

    Ch. 7 - Briefly define each of the following: a....Ch. 7 - A sample is selected from a population with a mean...Ch. 7 - Describe the distribution of sample means (shape,...Ch. 7 - The distribution of sample means is not always a...Ch. 7 - A population has a standard deviation of =24 . On...Ch. 7 - For a population with a mean of =45 and a standard...Ch. 7 - For a population with =12 , how large a sample is...Ch. 7 - If the population standard deviation is =10 , how...Ch. 7 - For a sample of n=16 scores, what is the value of...Ch. 7 - For a population with a mean of =40 and a standard...
    Ch. 7 - A sample of n=25 scores has a mean of M=68 . Find...Ch. 7 - A population forms a normal distribution with a...Ch. 7 - cores on a standardized reading test for 4th-grade...Ch. 7 - IQ scores form a normal distribution with a mean...Ch. 7 - A normal distribution has a mean of =54 and a...Ch. 7 - A population has a mean of =30 and a standard...Ch. 7 - For random samples of size n=25 selected from a...Ch. 7 - The distribution ages for students at the state...Ch. 7 - Jumbo shrimp are those that require 1015 shrimp to...Ch. 7 - Callahan (2009) conducted a study to evaluate the...Ch. 7 - A normal distribution has a mean of =60 and a...Ch. 7 - A random sample is obtained from a normal...Ch. 7 - A normal distribution has a mean of =65 and a...
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