Need help with Mathematical Statistics ASAP! Please view the question in the attachment.

1. It is believed that a mechanical property Y of a metal is related to tlte amounts cftwc chemical components adtiledar1 and 1:2. The data are given in table 1. a) Fit the following second order model to this data. Y = n + #1171 + 13211 + #3112 + taxi + E h) Test Hg: :33 = " = D. Approximate the attained signicance level and indicate the proper conclusion if we choose at = 3.95 c] Find a 95% condence interval for the mean value of 1' if x1 = 1 and x1 = . d)Findai\\':'a+"."'i:.predictionintervali'crl'ifa:1 = 1 ande = I]