Given a normal random variable X N Norm( 8.2, 3.8) , a. the 85 % symmetric about the mean confidence interval has lower bound L : [ 13.672 J] o" and upper bound U : i 2.728 l o' and datum 10.7631 is v " o" in the interval, b. the 85 % one-sided to the left confidence interval has upper bound U : 5.392923229 x d' and the datum 1.053 is not v '/ o\" in the interval, and c. the 95 % one-sided to the right confidence interval has lower bound L : 12.0208 x 44.4506 and the datum 15.3417'x o\" is not in the interval