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You would like to explore the relationship between income level and self-rated happiness among city dwellers, and data from your first pilot study of 20 participants produces a confidence interval for of (-0.73, -0.15). What can you conclude? Nothing; your pilot study is too underpowered to detect a true correlation A linear relationship between income level and self-rated happiness appears to be statistically unlikely Your method for measuring happiness is probably unreliable There is preliminary evidence for a negative correlation between income level and self-rated happiness

You would like to explore the relationship between income level and self-rated happiness among city dwellers, and data from your first pilot study of 20 participants produces a confidence interval for of (-0.73, -0.15). What can you conclude? Nothing; your pilot study is too underpowered to detect a true correlation A linear relationship between income level and self-rated happiness appears to be statistically unlikely Your method for measuring happiness is probably unreliable There is preliminary evidence for a negative correlation between income level and self-rated happiness

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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You would like to explore the relationship between income level and self-rated happiness among city dwellers, and data from your first pilot study of 20 participants produces a confidence interval for Bi of (-0.73, -0.15). What can you conclude? Nothing; your pilot study is too underpowered to detect a true correlation O A linear relationship between income level and self-rated happiness appears to be statistically unlikely O Your method for measuring happiness is probably unreliable O There is preliminary evidence for a negative correlation between income level and self-rated happiness
Transcribed Image Text:You would like to explore the relationship between income level and self-rated happiness among city dwellers, and data from your first pilot study of 20 participants produces a confidence interval for Bi of (-0.73, -0.15). What can you conclude? Nothing; your pilot study is too underpowered to detect a true correlation O A linear relationship between income level and self-rated happiness appears to be statistically unlikely O Your method for measuring happiness is probably unreliable O There is preliminary evidence for a negative correlation between income level and self-rated happiness
Which of the following formulas for a 100(1 a)% confidence interval for B1 is correct? bị ± tn-1,aS.E.(b1) bị ± tn-2,a/2S.E.(b1) bị ± tn-1,a/2S.E.(b1) bị ± tn-2,aS.E.(b1)
Transcribed Image Text:Which of the following formulas for a 100(1 a)% confidence interval for B1 is correct? bị ± tn-1,aS.E.(b1) bị ± tn-2,a/2S.E.(b1) bị ± tn-1,a/2S.E.(b1) bị ± tn-2,aS.E.(b1)
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