Temperature X = -8 -4 0 4 8

Flavor Y = 11.7 11 10.2 9 7.8

Using matrix notation for the regression model Y=XBeta+ Epsilon

Obtain the following:

a. Vector of estimated regression coefficients

b. estimated variance-covariance matrix of b

c. Point estimate of E(Yh), when Xh=-6

d. Estimated variance of Yh, when Xh = -6

e. Interval estimate of E(Yh) when Xh = -6. Should we call it a confidence or prediction interval? Use Alpha = 0.05.