Research Methods for the Behavioral Sciences (MindTap Course List)
6th Edition
ISBN: 9781337613316
Author: Frederick J Gravetter, Lori-Ann B. Forzano
Publisher: Cengage Learning
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Chapter 14, Problem 16E
To determine
The circumstances when the interpretation of results of multiple baseline design would be difficult
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This question is about Experimental design.
Two methods of assembling a television component are under consideration by management. Because of mire expensive machinery requirements, method B will only be adopted if it is significantly shorter than method A by more than a minute. In order to determine which method to adopt a skilled worker becomes proficient in both methods, and is then timed with a stopwatch while assembling the component by both methods. The following data were obtained:
Compare the two separate scatterplots. In particular, how do the associtation compare between women with pets vs. women without pets? Does one group have more variation in systolic blood pressure than the other? If so, for which group? Does systolic blood pressure seem higher for common ages between the two groups? If so, for which group?
Chapter 14 Solutions
Research Methods for the Behavioral Sciences (MindTap Course List)
Ch. 14.1 - Describe the goal of single-case research and...Ch. 14.1 - Identify the basic elements of a single-case...Ch. 14.2 - Describe the purpose of a phase in a single-case...Ch. 14.2 - Prob. 4LOCh. 14.3 - Describe the structure of an ABAB reversal design...Ch. 14.3 - Identify the strengths and weaknesses of an ABAB...Ch. 14.3 - Explain the circumstances in which an ABAB...Ch. 14.4 - Describe the structure of a multiple-baseline...Ch. 14.4 - Identity and describe the component-analysis...Ch. 14.4 - Identify the strengths and weaknesses of a...
Ch. 14.5 - Identify the general advantages and disadvantages...Ch. 14 - Prob. 1ECh. 14 - Prob. 2ECh. 14 - Traditional statistics (means, variances, and...Ch. 14 - Prob. 4ECh. 14 - Prob. 5ECh. 14 - Prob. 6ECh. 14 - What pattern of results is needed to provide...Ch. 14 - Identify the four phases that make up an ABAB...Ch. 14 - In general, how does a phase-change design like...Ch. 14 - Explain why an ABAB reversal design is...Ch. 14 - Prob. 11ECh. 14 - Prob. 12ECh. 14 - Prob. 13ECh. 14 - How does a multiple-baseline design rule out...Ch. 14 - Suppose (hat a complex therapy procedure contains...Ch. 14 - Prob. 16ECh. 14 - Briefly explain why a clinical psychologist might...
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- An important issue in conservation biology is how dispersal among populations influences the persistence of species in a fragmented landscape. Molofsky and Ferdy (2005) measured this in the annual plant, Cardamine pensylvanica, a weed that produces explosively dispersed seeds. Four treatments were used to manipulate seed dispersal by changing the distance among experimental plant populations. These treatments were adjacent (continuous treatment), separated by 23.2 cm (medium), separated by 49.5 cm (long), or separated by partitions that blocked all seed dispersal among populations (isolated). Treatments were randomly assigned to plant populations. The data shown are the number of generations that the populations persisted in six replicates of each treatment. Test whether the persistence of species differ with distance among experimental plant populations at 5% significance level. Conduct a follow up analysis when necessary. Treatment Generations persisted Isolated 9 8 8 8 8 Medium 14…arrow_forwardGreenLawns provides a lawn fertilizing and weed control service. The company is adding a special aeration treatment as a low-cost extra service option, which it hopes will help attract new customers. Management is planning to promote this new service in two media: radio and direct-mail advertising. A media budget of $4,000 is available for this promotional campaign. Based on past experience in promoting its other services, GreenLawns has obtained the following estimate of the relationship between sales and the amount spent on promotion in these two media: S = -2R2 − 12M2 − 9RM + 20R + 39M, Where S = total sales in thousands of dollars R = thousands of dollars spent on radio advertising M = thousands of dollars spent on direct-mail advertising GreenLawns would like to develop a promotional strategy that will lead to maximum sales subject to the restriction provided by the media budget. (a) What is the value of sales if $3,000 is spent on radio advertising and $1,000 is…arrow_forwardPLEASE DON'T UPLOAD A PICTURE OF THE ANSWER. PLEASE TYPE IT SO I CAN COPY AND PASTE IT INTO MY NOTES. THANK YOU!! Chi-Square Good of Fit Problem: Automobile insurance is much more expensive for teenage drivers than for older drivers. To justify this cost difference, insurance companies claim that the younger drivers are much more likely to be involved in costly accidents. To test this claim, a researcher obtained information about registered drivers from the Department of Motor Vehicles (DMV) and selected a sample of n = 300 accidents reports from the police department. The DMV reports the percentage of registered drivers in each age category as follows: 16% are younger than age 20,; 28%are 20 to 29 years old;and 56% are age 30 and older. The number of accidents reports for each age group is as follows: Under age 20 Age 20-29 Age 30 and older 68 92 140 Is…arrow_forward
- Identify and explain the significance of the three basic principles of experimental design.arrow_forwardGreenLawns provides a lawn fertilizing and weed control service. The company is adding a special aeration treatment as a low-cost extra service option, which it hopes will help attract new customers. Management is planning to promote this new service in two media: radio and direct-mail advertising. A media budget of $2,500 Is avallable for this promotional campaign. Based on past experience in promoting its other services, GreenLawns obtained the following estimate of the relationship between sales and the amount spent on promotion in these two media. S = -2R²10M2 - 8RM + 18R+ 34M where S = total sales in thousands of dollars R = thousands of dollars spent on radio advertising M = thousands of dollars spent on direct-mail advertising GreenLawns would like to develop a promotional strategy that will lead to maximum sales subject to the restriction provided by the media budget. (a) What is the value of sales (In dollars) if $1,500 is spent on radio advertising and $1,000 is spent on…arrow_forwardSuppose an All Greens store in Sonoma, California, wants to estimate a range of advertising costs appropriate to its store. If it spends too little on advertising, it will not reach enough customers. However, it does not want to overspend on advertising for this type and size of store. At this store, x1 = 163, x2 = 2.4, x3 = 188, x5 = 6.6, and x6 = 10. Use these data to predict x4 (advertising costs) and find an 80% confidence interval for your prediction. (Use 2 decimal places.) prediction lower limit upper limit At the 80% confidence level, what range of advertising costs do you think is appropriate for this store? (Round to nearest integer.) lower limit $ upper limit $arrow_forward
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