# The susceptibility of catfish to a certain chemical pollutant was determined by immersing individual fish in 2

## Question:

a. Determine and draw the estimated straight line of F regressed on X on the accompanying scatter diagram. Comment on the fit.

b. Test for the significance of the straight-line regression. Interpret your result.

c. Determine 95% confidence intervals for the true mean survival time µY|X (where Y = 10Y) at values of X = 5, 4.5, and 4. ( = 4.5.) Interpret these intervals.

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**Related Book For**

## Applied Regression Analysis and Other Multivariable Methods

**ISBN:** 978-1285051086

5th edition

**Authors:** David G. Kleinbaum, Lawrence L. Kupper, Azhar Nizam, Eli S. Rosenberg