Consider the following probability distribution. Complete parts a through f below. X 1 6 11 1 1 P(x) 3 1 3 a. Find . = 6 (Type an integer or decimal rounded to two decimal places as needed.) b. For a random sample of n = 3 observations from this distribution, find the sampling distribution of the sample mean. Type the answers in ascending order for x. X p(x) (Type integers or simplified fractions.)