PSY230 stats (exam 3 conceptual) NAU Dr. Weber Practice Questions and Answers (100% Pass)
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Nothern Arizona University
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Nothern Arizona University
PSY230 stats (exam 3 conceptual) NAU
Dr. Weber Practice Questions and
Answers (100% Pass)
A Type I error is defined as - Answer️️ -a decision to reject the null
hypothesis when the null hypothesis is true.
You conduct a sign test and find that the calculated probability is
.067. You are u...
PSY230 stats (exam 3 conceptual) NAU
Dr. Weber Practice Questions and
Answers (100% Pass)
A Type I error is defined as - Answer✔️✔️-a decision to reject the null
hypothesis when the null hypothesis is true.
You conduct a sign test and find that the calculated probability is
.067. You are using an alpha level of .05two-tailed. Given this
scenario, is the following statement true or false?
Based on the decision rule, you should reject the null hypothesis
and conclude that the independent variable has an effect on the
dependent variable. - Answer✔️✔️-False
Is the following statement true or false?
A result that is statistically significant can be assumed to be
important as well. - Answer✔️✔️-False
Which of the following asserts that the independent variable does
not affect the dependent variable? - Answer✔️✔️-The null hypothesis.
Match the type of test (one- vs. two-tailed) with the hypothesis for
which it is indicated.
The new treatment will decrease depression scores.
The new treatment will have an effect on depression scores -
Answer✔️✔️-B. One-tailed test
A. Two-tailed test
The hypothesis that claims the difference in results between
conditions is due to the independent variable is the - Answer✔️✔️-
alternative hypothesis
This error is defined as a decision to retain the null hypothesis
when the null hypothesis is false. - Answer✔️✔️-Type II error
By making alpha more stringent, the possible outcomes which allow
the rejection of H0 are _______. - Answer✔️✔️-decreased
Mathematically, the power of an experiment is - Answer✔️✔️-the
probability that the results of an experiment will allow rejection of
the null hypothesis if the independent variable has a real effect.
As the power of an experiment increases, the probability of making
a Type II error ___________________. - Answer✔️✔️-decreases
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