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 12

10 19

20 33

40 38

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.)

Answer 1