Question: Compute the leastsquares regression line for predicting y from x given the following summary statistics. x-, sx = , y =, sy =1.9, r =

Compute the leastsquares regression line for predicting y from x given the following summary statistics.

x-, sx = , y =, sy =1.9, r = -0.85

Mortgage rates following ar interest rates (annual percentage rates) for a 30 year fixed rate mortgage from a sample of lenders in Macon. Georgia on a recent day. It is reasonable to assume that the population is approximately normal.

4.750, ,4.375, 4.1476, 4.679, 4.426, 4.227, 4.125, 4.250,3.950, 4.191, 4.299, 4.415

a. conduct a 99% confidence interval for the mean data

b.One week earlier the mean rate was 4050% A mortgage broker claims that the mean rateis now higher. Based on the confidence interval, is this a reasonable claim?

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