Question

For each of the following studies determine which t-test is the appropriate analysis (one sample, repeated measures, independent samples).

- A researcher is examining whether a cognitive behavioral therapy has an effect on levels of anxiety. She records the level of anxiety in a group of patients prior to therapy, and again after the 8-week therapy.

- A professor is interested in seeing whether or not his class is more neurotic than an estimated population mean. He records his class’s neuroticism score and compares it to an estimated population score for neuroticism.

Answer #1

professor is interested in seeing whether or not his class is more neurotic than an estimated population mean. He records his class’s neuroticism score and compares it to an estimated population score for neuroticism.

Here we will use one sample t test....as there is only on variable...

researcher is examining whether a cognitive behavioral therapy has an effect on levels of anxiety. She records the level of anxiety in a group of patients prior to therapy, and again after the 8-week therapy.

Here we will use two sample independent t test for comparing a group of patients prior to therapy and after 8 weeks...

In the following studies, state whether the one-sample
t test is an appropriate test statistic to analyze data.
If not, then explain why it is not appropriate.
(a) a study testing whether night-shift workers sleep the
recommended 8 hours per day
a one-sample t-test is appropriatea OR
one-sample t-test is not appropriate because a specific
standard or criteria is not identified
(b) a study measuring differences in attitudes about morality
among people who self-identify as liberal or conservative
a one-sample...

In the following studies, state whether you would use a one
sample t test, an independent sample t test or a paired sample t
test.
A study examining whether there were differences in exercise
preference between men and women.
A blind taste test to determine preference of Pepsi vs Coca
Cola.
A study to determine if a class of middle school aged children
had higher than normal BMI’s (normal = 25)
A study to determine if IV Tylenol was more...

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