MINDTAP PSYCHOLOGY FOR GRAVETTER/FORZAN
5th Edition
ISBN: 9781305264953
Author: Forzano
Publisher: IACCENGAGE
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Chapter 6, Problem 2E
For each of the following scenarios, identify which research strategy is used: descriptive,
a. Dr. Jones conducts a study examining the relationship between sugar consumption and activity level for 5-year-old children. Sugar consumption scores are obtained by interviewing each child’s parents and activity level is measured by observing the children during an outdoor play period.
b. Dr. Jones conducts a study examining the relationship between sugar consumption and activity level for 5-year-old children. Sugar consumption scores are obtained by interviewing each child’s parents. Based on the interview results, the children are divided into two groups: those who consume large amounts of sugar and those who eat relatively small amounts. Then activity level is measured by observing the children during an outdoor play period to determine if there is any difference between the two groups.
c. Dr. Jones conducts a study examining the relationship between sugar consumption and activity level for 5-year-old children. A group of children is randomly separated into two groups. One group is given a sugary cereal for breakfast and the other is given oatmeal. Activity level is then measured by observing the children during an outdoor play period to determine if there is any difference between the two groups.
d. Dr. Jones conducts a study examining activity level for 5-year-old children. Each afternoon for 1 week, a group of children in a childcare center is observed during a 30-minute period while they play outdoors. Activity level for each child is recorded during the 30-minute period.
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CENGAGE MINDTAP
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Customers experiencing technical difficulty with their Internet cable service may call an 800 number for technical support. It takes the technician between 30 seconds and 11 minutes to resolve the problem. The distribution of this support time follows the uniform distribution.
Required:
a. What are the values for a and b in minutes?
Note: Do not round your intermediate calculations. Round your answers to 1 decimal place.
b-1. What is the mean time to resolve the problem?
b-2. What is the standard deviation of the time?
c. What percent of the problems take more than 5 minutes to resolve?
d. Suppose we wish to find the middle 50% of the problem-solving times. What are the end points of these two times?
Chapter 6 Solutions
MINDTAP PSYCHOLOGY FOR GRAVETTER/FORZAN
Ch. 6.1 - Describe, compare, and contrast the five research...Ch. 6.1 - Define research strategy, research design, and...Ch. 6.2 - Define the concept of external validity and a...Ch. 6.2 - Define the concept of internal validity and a...Ch. 6.3 - Identify and explain the common threats to...Ch. 6.4 - Describe how extraneous variables can become...Ch. 6.4 - Describe how environmental variables can be...Ch. 6.5 - Define experimenter bias, demand characteristics,...Ch. 6 - In addition to the key words, you should also be...Ch. 6 - For each of the following scenarios, identify...
Ch. 6 - How is the descriptive strategy different from the...Ch. 6 - Explain the difference among the terms research...Ch. 6 - A researcher conducts a study with 6-year-old...Ch. 6 - A researcher finds that college students are more...Ch. 6 - Explain how using college students as participants...Ch. 6 - What is the novelty effect, and how does it affect...Ch. 6 - Suppose that you wake up in the morning with all...Ch. 6 - What is the primary threat to internal validity...Ch. 6 - Describe how experimenter bias can be a threat to...Ch. 6 - Describe how participant reactivity can be a...Ch. 6 - Selection bias and individual differences are both...
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