. Assume that you have a response Y; that is a. linear function of time 21. After time . 2 1f.) the slope dmihles. (a) Specify an appropriate model, identifying all parameters. (1)) Based on the following data, compute the least squares estimates: of the perfume- tern: t: 7' 7.8 8.6 8.7 9.2 10.1 10.1 11.2 12.3 15.9 y: 22 26 26 28 28 30 28 35 37 53