Research Methods for the Behavioral Sciences (MindTap Course List)
5th Edition
ISBN: 9781305104136
Author: Frederick J Gravetter, Lori-Ann B. Forzano
Publisher: Wadsworth Publishing
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Textbook Question
Chapter 1, Problem 13E
Determine whether each of the following hypotheses is testable and refutable. If not, explain why.
- The color red as seen by males is different from the color red as seen by females.
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Many questions in research can be expressed as two competing statements about the population parameter. These two statements are called the null and the alternative hypotheses. Usually, the researcher hopes the sample evidence will be in favor of the alternative hypothesis, the new theory. It is important to be able to state the theories that are being put to a test.
For each scenario below, write out the hypotheses to be put to the test and define the parameter of interest in context of the problem.
1. According to the World Bank, 10.7 percent of the world's population lived in poverty in 2013. Researchers wonder if this rate has changed since then (was the rate different in 2022 compared to 2013?).For this scenario, write out the hypotheses to be put to the test and define the parameter of interest in context of the problem. H0:Ha: The parameter p represents ___(provide appropriate definition in context)________
2. Do a minority of Michigan residents clear snow from sidewalks…
A researcher thinks that if expectant mothers use vitamins, the birth weight of the babies will increase. The average birth weight of the population is 3.9 kgs. What is the alternative hypothesis?
a. Ha: ? > 3.9
b. Ha: ? < 3.9
c. Ha: ? = 3.9
d. Ha: ? ≠ 3.9
An important issue in court cases is the accuracy of eyewitness testimony. Behavioral scientists have suggested eyewitnesses can be influenced by how a question is phrased. A researcher conducts a study where 15 people watch a film of an accident in which Car A runs a stop sign and hits Car B at a speed of 20 miles per hour. After watching the film, she asks each of the 15 people to estimate Car A's speed at the moment of impact (they do not know the actual speed). However, the question is phrased three different ways. Five people are asked, “How fast was Car A going at the time of the accident with Car B?” Another five are asked, “How fast was Car A going when it hit Car B?” The last five are asked, “How fast was Car A going when it smashed into Car B?” An investigator wants to determine if estimates of speed vary as a function of the wording of the question, with more extreme wordings leading to higher estimates, at 0.05 level. Let Xa be the group of people who were asked using the…
Chapter 1 Solutions
Research Methods for the Behavioral Sciences (MindTap Course List)
Ch. 1.2 - Describe tenacity and intuition as methods of...Ch. 1.2 - Describe and identify an example of the method of...Ch. 1.2 - Describe and identify an example of the rational...Ch. 1.2 - Describe and identify an example of the empirical...Ch. 1.3 - Identify and describe the steps of the scientific...Ch. 1.3 - Prob. 6LOCh. 1.3 - Prob. 7LOCh. 1.3 - Prob. 8LOCh. 1.3 - Explain the distinction between science and...Ch. 1.4 - Describe the difference between qualitative and...
Ch. 1.4 - Identify and describe the steps in the research...Ch. 1 - In addition to the key words that were defined in...Ch. 1 - Describe how the cliche You can lead a horse to...Ch. 1 - Describe why you might be cautious about using the...Ch. 1 - Prob. 4ECh. 1 - Pessimists commonly claim that, if you drop a...Ch. 1 - What are the five steps of the scientific method?Ch. 1 - Describe the difference between inductive and...Ch. 1 - State a hypothesis that identifies a specific...Ch. 1 - Is the following hypothesis testable, refutable,...Ch. 1 - Describe what it means to say that science is...Ch. 1 - An expert appears on a shopping network to explain...Ch. 1 - A social science researcher would like to...Ch. 1 - Determine whether each of the following hypotheses...Ch. 1 - In this chapter, we identified a variety of...Ch. 1 - Prob. 2EA
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- Many questions in research can be expressed as two competing statements about the population parameter. These two statements are called the null and the alternative hypotheses. Usually, the researcher hopes the sample evidence will be in favor of the alternative hypothesis, the new theory. It is important to be able to state the theories that are being put to a test. Do a minority of Michigan residents clear snow from sidewalks before 9 am after snow has fallen?For this scenario, write out the hypotheses to be put to the test and define the parameter of interest in context of the problem. H0:Ha: The parameter p represents ___(provide appropriate definition in context)________arrow_forwardThe national average SAT score is roughly 1500. We would like to see if the high school seniors who apply to Duke have higher than average SAT scores. We randomly sample 100 applicants' files and record their SAT scores. Which of the following is the correct set of hypotheses for this research question? H0: μ 2 150; HA : μ H National; HA: H Duke H National Ho: H s 1500; HẠ: µ > 1500 Но: и3 1500; НА: 1500arrow_forwardMany questions in research can be expressed as two competing statements about the population parameter. These two statements are called the null and the alternative hypotheses. Usually, the researcher hopes the sample evidence will be in favor of the alternative hypothesis, the new theory. It is important to be able to state the theories that are being put to a test. Write out the hypotheses to be put to the test and define the parameter of interest in context of the problem. According to the World Bank, 10.7 percent of the world's population lived in poverty in 2013. Researchers wonder if this rate has changed since then (was the rate different in 2022 compared to 2013?).For this scenario, write out the hypotheses to be put to the test and define the parameter of interest in context of the problem. H0:Ha: The parameter p represents ___(provide appropriate definition in context)________arrow_forward
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