Locate a scholarly article in a psychology journal that utilizes a hypothesis te
ID: 3335778 • Letter: L
Question
Locate a scholarly article in a psychology journal that utilizes a hypothesis test. Use library resources, attached in course materials, if you need help finding an article.
Article: http://web.mst.edu/~psyworld/anovadescribe.htm
In 500-750 words, do the following:
Describe the hypothesis test
Discuss the hypothesis’ role in the context of the whole article (i.e., what information does it actually give, what were the results of the test).
Consider the following questions while you are reading the article and writing your analysis.
What is the research question?
What is the null hypothesis?
What is the alternative hypothesis?
Which test statistics was used?
What level of significance was used?
What were the calculated results?
What statistical conclusion was reached?
What was the experimental conclusion?
What, if any, future research was suggested?
Explanation / Answer
Describe the hypothesis test
hypothesis test is one way ANOVA to compare 3 or more means
Discuss the hypothesis’ role in the context of the whole article (i.e., what information does it actually give, what were the results of the test).
learning in groups of three will be more effective than learning in pairs or individually.
the research question:
To compare the means in 3 learning groups
What is the null hypothesis?
There is no significant difference in means between three or more groups
What is the alternative hypothesis?
Atleast one of the group means are different.
Which test statistics was used?
Anova F statistic used
F=MS between groupos/MS within groups=696.23/58.64=11.87
What level of significance was used?
nothing specified we assume F=0.05
5% level o f significance
What were the calculated results?
F=11.87
p=0.0002
What statistical conclusion was reached?
Decsion rule is:
if p<0.05 reject null hypothesis
if p>0.05 fail to reject null hypothesis
here p=0.0002
p<0.05
Reject Null hypothesis
the groups are statistically significantly different from one another.
What was the experimental conclusion?
studying in a group is more effective than studying individually, but the size of the group (two vs. three members) is not important.
In the case of this experiment, this seems obvious based on the means,
What, if any, future research was suggested?
estimates of statistical significance become very important.
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