A pilot survey of 21 households gave the following data for numbers of members (X), cars (Y1) and TV sets (Y2):Assume = 2500, N=700a) By comparing the

A pilot survey of 21 households gave the following data for numbers of members (X), cars (Y1) and TV sets (Y2):Assume = 2500, N=700a) By comparing the estimated variance for a ratio estimate for the total number of cars (tau Y1) to the estimated variance of the linear regression estimate for the same total, please discuss which method of sampling you would prefer.b) By comparing the estimated variances for ratio and the difference estimates of the total number of TV sets (tau Y2), discuss which method of sampling you would prefer for that total.