To measure air pollution in a home, let X and Y equal the amount of suspended particulate matter (in ug/mº) measured dur

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To Measure Air Pollution In A Home Let X And Y Equal The Amount Of Suspended Particulate Matter In Ug Mo Measured Dur 1 (39.54 KiB) Viewed 93 times

To measure air pollution in a home, let X and Y equal the amount of suspended particulate matter (in ug/mº) measured during a 24 hour period in a home in which there is no smoker and a home which there is a smoker, respectively. Assume that the distributions of X and Y are N(Hx,64)and N(hy,36), respectively. We want to test whether there is a higher amount of suspended particulate matter in a home with smokers than without smokers. If a random sample of size 9 yielded x=93 and Sx=12.4 while a random sample of size 11 yielded y = 130 and Sy=7.2, test at 5%. =