Essentials of Statistics for the Behavioral Sciences
8th Edition
ISBN: 9781133956570
Author: Frederick J Gravetter, Larry B. Wallnau
Publisher: Cengage Learning
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Chapter 13, Problem 23P
Example 13.1 in this chapter described a two-factor study examining performance under two audience conditions (factor B) for high and low self-esteem participants (factor A). The following summary table presents possible results from the analysis of that study. Assuming that the study used a separate sample of n = 15 participants in each treatment condition (each cell), fill in the missing values in the table. (Hint: Start with the df values.)
| Source | SS | df | MS | |
| Between treatments | 67 | _____ | ||
| Audience | ____ | _____ | _____ | F =______ |
| Self-esteem | 29 | _____ | _____ | F = |
| Interaction | _____ | ______ | _____ | F = 5.50 |
| Within treatments | _____ | _____ | 4 | |
| Total | _____ | ______ |
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Question 2
A researcher was interested in studying if there is a significant relationship between the severity of COVID 19 and blood types of individuals. 2400 individuals were studied and the results are shown below.
Condition Blood Type
O A B AB Total
Critical 64 44 20 8 136
Severe 175 129 50 15 369
Moderate 211 528 151 125 1015
Mild 200 400 140 140 880
Total 650 1101 361 288 240
a .State both the null and alternative hypotheses. b. Provide the decision rule for making this decision. Use an alpha level of 5%.
c. Show all of the work necessary to calculate the appropriate statistic.d. What conclusion are you allowed to draw? e. Would your conclusion change at the 10% level of significance?
Question 1)
Consider the following context:
The nutrition and food science division of Farnsworth Pharmaceuticals is alpha testing an OTC diagnostic kit so that adults who self-report a certain food allergy can affirm their insensitivity to that food allergen. Preliminary clinical trials yielded that 25% of the volunteers who suspected they had food allergies were clinically identified as sensitive or intolerant to the food allergen; unfortunately and disappointingly, only 10% of those who tested positive in the clinic also tested positive with the kit. Furthermore, of those self-reporting adult volunteers who had a negative clinic outcome, 5% tested positive anyway with the kit.
How many complete branches, from start to finish, would a tree diagram that models this context include? H
Question 2)
The nutrition and food science division of Farnsworth Pharmaceuticals is alpha testing an OTC diagnostic kit so that adults who self-report a certain food allergy can affirm their…
Chapter 13 Solutions
Essentials of Statistics for the Behavioral Sciences
Ch. 13.2 - The F-ratio for the repeated-measures ANOVA is...Ch. 13.2 - A repeated-measures study is used to evaluate the...Ch. 13.2 - Prob. 2LCACh. 13.2 - Prob. 3LCACh. 13.2 - Prob. 1LCBCh. 13.2 - Prob. 2LCBCh. 13.3 - Prob. 1LCCh. 13.3 - It is impossible to have an interaction unless you...Ch. 13.3 - Prob. 1LCACh. 13.3 - Prob. 2LCA
Ch. 13.3 - Prob. 3LCACh. 13 - How does the denominator of the F-ratio (the error...Ch. 13 - The repeated-measures ANOVA can be viewed as a...Ch. 13 - A researcher conducts an experiment comparing...Ch. 13 - Prob. 4PCh. 13 - A researcher uses a repeated-measures ANOVA to...Ch. 13 - A published report of a repeated-measures research...Ch. 13 - A recent study examined how applicants with a...Ch. 13 - One of the primary advantages of a...Ch. 13 - The following data are from an experiment...Ch. 13 - A researcher is evaluating customer satisfaction...Ch. 13 - The following summary table presents the results...Ch. 13 - A recent study indicates that simply giving...Ch. 13 - Prob. 14PCh. 13 - The endorphins released by the brain act as...Ch. 13 - Prob. 16PCh. 13 - Explain what happens during each of the two stages...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 - Prob. 21PCh. 13 - Prob. 22PCh. 13 - Example 13.1 in this chapter described a...Ch. 13 - The following table summarizes the results from a...Ch. 13 - The following data are from a two-factor study...Ch. 13 - Research indicates that paying students to improve...Ch. 13 - A researcher examining the jet lag that people...Ch. 13 - Prob. 2RECh. 13 - Briefly describe what is meant by an interaction...Ch. 13 - Most sports injuries are immediate and obvious,...
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