The melting point of each of 16 samples of a

The melting point of each of 16 samples of a certain brand of hydrogenated vegetable oil was determined, resulting in  = 94.32. Assume that the distribution of the melting point is normal with σ = 1.20.
a. Test H0: μ = 95 versus Ha: μ ≠ 95 using a two-tailed level .01 test.
b. If a level .01 test is used, what is β(94), the probability of a type II error when μ = 94?
c. What value of n is necessary to ensure that β(94) = .1 when α = .01?
Distribution
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