A psychologist noted that people have more difficulty sleeping in a bright room

Question

A psychologist noted that people have more difficulty sleeping in a bright room than in a dark room. She measured whether the intensity of the light could predict the time it took a sample of 4 participants to fall asleep. The data for this hypothetical study are listed in the following table. Intensity of Light (in watts) Time It Took to Sleep (in minutes) X Y 5 8 10 16 20 29 40 34 Compute an analysis of regression for this hypothetical study. (Round your answers to two decimal places.) Source of Variation SS df MS Fobt Regression Residual (error) Total Make a decision to retain or reject the null hypothesis. (Assume alpha equal to 0.05.) Retain the null hypothesis. Reject the null hypothesis.

Explanation / Answer

For the given data we get output in excel as follows by using regression in data analysis

In the above out put P value is greater than 0.05

Therefore we retain the null hypothesis

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