The article \"Toxiccity Assessment of Wastewaters, River watersand sediments in

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The article "Toxiccity Assessment of Wastewaters, River watersand sediments in aistria using cost-effective microbiotests.", byM. Latif and E. Licek ( 2004, Enviromental Toxicity, Vol 19, No 4,302-308) reports data on conductivity (s/cm) measurements ofsurface water (X), and water in the sediment at the bank of a river(Y), taken at 10 points during winter. The data are X: 220 800 277 223 226 240 752 317 333 340 Y: 386 889 358 362 411 390 927 612 554 532
Assume that the regression function of Y on X is linear, and theconditional variance of Y is given a value of x of X is ^2,the same for all x.
==>Construct a 90% confidence interval for the expected sedimentconductivity when the surface conductivity is 300.

The article "Toxiccity Assessment of Wastewaters, River watersand sediments in aistria using cost-effective microbiotests.", byM. Latif and E. Licek ( 2004, Enviromental Toxicity, Vol 19, No 4,302-308) reports data on conductivity (s/cm) measurements ofsurface water (X), and water in the sediment at the bank of a river(Y), taken at 10 points during winter. The data are X: 220 800 277 223 226 240 752 317 333 340 Y: 386 889 358 362 411 390 927 612 554 532
Assume that the regression function of Y on X is linear, and theconditional variance of Y is given a value of x of X is ^2,the same for all x.
==>Construct a 90% confidence interval for the expected sedimentconductivity when the surface conductivity is 300.

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Values of Predictors for NewObservations

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