A population of values has a distribution with A = 139.4 and o = 21.8. You intend to draw a random sample of size n = 86. According to the Central Limit Theorem: (a) What is the mean of the distribution of sample means? HI = 139.4 (b) What is the standard deviation of the distribution of sample means? (Report answer accurate to 4 decimal place.) OT 2.3508 (c) In a random sample of n=86, what is the probability that its sample mean is more than 138.4? Round to three decimal places. (d) In a random sample of n=86, what is the probability that its sample mean is less than 138? Give your answer to three decimal places