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lecture_22_f01 - Statistics 400 Lecture 22 Last Day...

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Statistics 400 - Lecture 22
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Last Day: Regression Today: More Regression
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Example (radiation): Test the hypothesis that the intercept is 0 with significance level  0.05 95% Confidence Interval
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Estimation of the Mean Response at a Specified x Why would we want to compute the regression line? Estimated mean response at a specified  x Prediction of a future response at a specified  x  What is the difference?
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CI for the Mean Response at a Specified x A                confidence interval for the mean response is:                   )% 1 ( 100 α -
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Prediction Interval for a Single Response at a Specified x A                prediction interval for a future response is:                   )% 1 ( 100 α -
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Example (radiation): Give a 95% confidence interval for the mean response when the  radiation is 24 picocuries/L  Give a 95% prediction interval for the a single response when the  radiation is 24 picocuries/L 
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