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PLEASE PROVIDE THE ANSWERS IN THE BOXES A psychologist noted that people have mo

ID: 3325573 • Letter: P

Question

PLEASE PROVIDE THE ANSWERS IN THE BOXES

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.


Compute an analysis of regression for this hypothetical study. (Round your answers to two decimal places.)


Make a decision to retain or reject the null hypothesis. (Assume alpha equal to 0.05.)Retain the null hypothesis.Reject the null hypothesis.    

Intensity of
Light (in watts) Time It Took to
Sleep (in minutes) X Y 5 11 10 18 20 30 40 36

Explanation / Answer

From the statistical software output, the ANOVA table will be:

Analysis of variance table for regression model:

p - Value > 0.05, we retain the null hypothesis.

Source SS DF MS F-stat P-value Regression 339.18 1 339.18 14.89 0.06 Error 45.57 2 22.78 Total 384.75 3
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