leading magazine (like Barron's) reported at one time that the average number of weeks an individu unemployed is 18.5 weeks. Assume that for the population of all unemployed individuals the populati mean length of unemployment is 18.5 weeks and that the population standard deviation is 9.7 weeks. Suppose you would like to select a random sample of 54 unemployed individuals for a follow-up study Find the probability that a single randomly selected value is between 16.8 and 22.2. P(16.8