A random sample of n = 49 observations is drawn from a population with a mean equal to 23 and a standard deviation equal to 14. Complete parts a through e. a. Find the probability that x is less than 21. The probability that x is less than 21 is 0.1587. (Type an integer or decimal rounded to four decimal places as needed.) b. Find the probability that x is greater than 26. The probability that x is greater than 26 is . (Type an integer or decimal rounded to four decimal places as needed.)