Pearson eText for Statistics for Psychology -- Instant Access (Pearson+)
6th Edition
ISBN: 9780137477968
Author: Arthur Aron, Elliot Coups
Publisher: PEARSON+
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Chapter 4, Problem 1.1HD
(a)
To determine
State the null hypothesis.
(a)
Expert Solution
Answer to Problem 1.1HD
The population of the rats that are given an experimental treatment took the same amount of time to learn the maze as the population of rats that are not given any experimental treatment is the null hypothesis in the study.
Explanation of Solution
Null hypothesis:
The null hypothesis denotes the statement for determining the relationship between the populations which are opposite to the researcher hypothesis. In other words, null hypothesis is the statement showing that there is no difference between the populations, this statement is included in hypothesis testing to examine whether it can be rejected or not.
The researcher has taken a sample of rats from the laboratory and is given an experimental treatment for making them learn maze faster than the other rats.
The two populations included in the study are, rats that are given an experimental treatment and rats in general, that is rats that are not given experimental treatment. The null hypothesis states that there would be no difference between the two populations.
The null hypothesis for the study is, the population of the rats that are given an experimental treatment took the same amount of time to learn the maze as the population of rats that are not given any experimental treatment.
(b)
To determine
State the research hypothesis.
(b)
Expert Solution
Answer to Problem 1.1HD
The population of the rats that are given an experimental treatment learnt the maze faster than the population of rats that are not given any experimental treatment is the research hypothesis in the study.
Explanation of Solution
Research hypothesis:
The research hypothesis denotes the statement for determining the predicted relationship between the populations. In other words, research hypothesis is the statement showing that there is a difference between the populations.
The two populations included in the study are, rats that are given an experimental treatment and rats in general, that is rats that are not given experimental treatment. The research hypothesis states that there would be a difference between these two populations that is the population of rats given treatment would be faster than the population of rats in general.
The research hypothesis for the study is, the population of the rats that are given an experimental treatment learnt the maze faster than the population of rats that are not given any experimental treatment.
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Chapter 4 Solutions
Pearson eText for Statistics for Psychology -- Instant Access (Pearson+)
Ch. 4 - Prob. 1.1HDCh. 4 - (a) What is a comparison distribution? (b) What...Ch. 4 - What is the cutoff sample score?
Ch. 4 - Why do we say that hypothesis testing involves a...Ch. 4 - What can you conclude when (a) a result is so...Ch. 4 - A training program to increase friendliness is...Ch. 4 - What is a nondirectional hypothesis test?
Ch. 4 - What is a two-tailed test?
Ch. 4 - Why do you use a two-tailed test when testing a...Ch. 4 - What is the advantage of using a one-tailed test...
Ch. 4 - Why might you use a two-tailed test even when your...Ch. 4 - A researcher predicts that making people hungry...Ch. 4 - Define the following terms in your own words: (a)...Ch. 4 - When a result is not extreme enough to reject the...Ch. 4 - For each of the following, (a) say which two...Ch. 4 - Based on the information given for each of the...Ch. 4 - Based on the information given for each of the...Ch. 4 - A psychologist studying the senses of taste and...Ch. 4 - A psychologist is working with people who have had...Ch. 4 - Prob. 8PPCh. 4 - Prob. 9PPCh. 4 - Prob. 10PPCh. 4 - Prob. 11PPCh. 4 - Prob. 12PPCh. 4 - For each of the following, (a) state which two...Ch. 4 - Based on the information given for each of the...Ch. 4 - Based on the information given for each of the...Ch. 4 - A researcher wants to test whether a certain sound...Ch. 4 - A family psychologist developed an elaborate...Ch. 4 - A researcher predicts that listening to music...Ch. 4 - Pecukonis (1990), as part of a larger study,...Ch. 4 - Bohnert and colleagues (2007) conducted a study...
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