Scenario 4. A researcher is interested in studying whether a new mobile app can help to...
Scenario 4. A researcher is interested in studying whether a new mobile app can help to reduce depression. She gives 14 participants the new app and measures their depression levels before using the app, and after using the app to see if depression levels change.
Null hypothesis- H0: uposttest = upretest
Alternative hypothesis- H1: uposttest ≠ upretest
Independent variable- the phones the participants use Dependent variable- depression levels
Using a dependent sample t-test
1) Imagine that you actually did the study in scenario 4. Write up the results as you would see it in an APA results section of an empirical article (you can make up the values for your statistical test, means, and standard deviations here, but make sure you're writing up the results properly!
Homework Answers
A paired-samples t-test was conducted to find if a new mobile app had an impact on depression. There was a significant difference in depression levels for the prettest (M = 5.4, SD = 1.14) and posttest (M = 2.4, SD = 1.67) conditions; t(13) = 5.66, p < 0.01.
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