Q1. An electrical contractor ts a simple linear regression model, relating the cost to Wire a house (Y, in dollars) to the size of the house (X, in ftl). The contractor ts a model, based on a sample of 11:16 houses and obtains the following results. If Y =50.00+0.22X :3 = 1600 2(X, Y)3 = 4000000 X = 2000 I I :1. Compute the estimated standard errors of l and 50 b. Compute a 95% Condence Interval for [3, e. Compute a 95% Condence Interval for the mean of all homes with X0 = 2000 (1. Compute a 95% Prediction Interval for her brother-in-laws house with X0 = 2000