Question

An experiment is conducted to test the hypothesis that physical activity (PA) promotes stress resilience. Participants...

An experiment is conducted to test the hypothesis that physical activity (PA) promotes stress resilience. Participants diagnosed with PTSD are grouped as sedentary, low PA, or high PA. They are also grouped, based on their diagnostic evaluations, as having adaptive or maladaptive coping strategies. These data should be analyzed by

chi-square test of independence.

chi-square goodness of fit test.

two-way ANOVA.

one-way ANOVA.

independent measures t-test.

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Answer #1

The correct answer is:

We need to test the hypothesis that physical activity (PA) promotes stress resilience. Participants diagnosed with PTSD are grouped as sedentary, low PA, or high PA. They are also grouped, based on their diagnostic evaluations, as having adaptive or maladaptive coping strategies.

Here both the variables are categorical and we are dealing with count data. Also, we need to ascertain whether a relationship exists between the two categorical variables. Hence the chi-square test of independence is a natural choice here.

Let me know in the comments if anything is not clear. I will reply ASAP! Please do upvote if satisfied!

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