*6. Today, Sasha checked their weight several times with different scales observing (in kilograms): 92, 82, 83, 86, 86, 90, 83, 84, 89, 85. Assume that the data is normal with variance o2 = 9 and a prior distribution for the true weight / ~ N (80, 100). (a) What is the posterior distribution? (b) Compute the credible interval of 95% for u a priori and a posteriori. (c) Compare both intervals with the frequentist 95% confidence interval. Can you conclude that I was optimistic