9 The melting point of each of 16 samples of a certain brand of hydrogenated vegetable oil was determined resulting in 7 94 32 Assume that the distribution of the melting point is normal with 1 20 a Test H 95 versus H 95 using a two tailed level 01 test b If a level 01 test is used what is 3 94 the probabil ity of a type II error when 94 c What value of nis necessary to ensure that B 94 1 when a 01