SHOW YOUR WORK IN MINITAB or excel 4 psychologist noted that people have more di

Question

SHOW YOUR WORK IN MINITAB or excel

4 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) It Took to Sleep (in minutes) 10 20 40 19 30 35 Compute an analysis of regression for this hypothetical study. (Round your answers to two decimal places.) df MS Fobt ariat 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

H0: There is no difference between means of two populations

H1:There is a difference between means of two populations

alpha:5%

Test statistics:

From Excel

F =0.18809

COnclusion:

P value=0.6797 > 0.05, we donot reject the H0. Hence claim is not significance

Anova: Single Factor SUMMARY Groups Count Sum Average Variance x 4 75 18.75 239.5833 y 4 92 23 144.6667 ANOVA Source of Variation SS df MS F P-value F crit Between Groups 36.125 1 36.125 0.188029 0.679719 5.987378 Within Groups 1152.75 6 192.125 Total 1188.875 7

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