Question

I have a hypothesis that Spring Break affects students' stress levels. I use the sign test...

I have a hypothesis that Spring Break affects students' stress levels. I use the sign test by measuring students' stress levels before and after Spring Break. I have not completed my study yet, but I know that I will have 12 participants in my study. You can assume Alpha = .05.

I think that Spring Break is not the only thing, nor the strongest thing, that will affect stress levels. I think that, in the whole population, the probability of stress levels increasing after Spring Break is .20.  

Calculate Power for this study

Math   Statistics-And-Probability   
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Answer #1

As per given information please find hypothesis of interest and power of test in below screenshot:

Since researcher in assumption of there is no effect of Spring break effect on student's stress level it shows that Under Ho we are doing experiment.

Hence power of test = 0.80

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