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Statistics...Linear Regression

KangoSkank · 2009-05-07 00:13:27

Maybe its just the time of night but I can't think of how to approach this short question. Any help appreciated. Reaction time to a stimulus (y seconds) is believed to be related to the amount of a drug (x%) in the bloodstream by a simple linear regression model E(y) = -.1 + .8x with sigma=.02 what proportion of…

07-05-2009 12:13am

#1

KangoSkank

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Join Date: October 2008

Posts: 17

Maybe its just the time of night but I can't think of how to approach this short question. Any help appreciated.

Reaction time to a stimulus (y seconds) is believed to be related to the amount of a drug (x%) in the bloodstream by a simple linear regression model

E(y) = -.1 + .8x

with sigma=.02 what proportion of individuals with 4% drug in the bloodstream will have a reaction time in excess of 3 seconds.

Thanks

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Comments

#2 07-05-2009 12:26pm

Thomas_S_Hunterson

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Observations are normally distributed around E(y|x) with variance sigma^2

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