Question 6 of 9 > This quiz: 21 point(s) possible This question: 3 point(s) possible Submit quiz In 1970, 92% of 30-year-olds in a country earned more than their parents did at age 30 (adjusted for inflation). In 2014, only 44% of 30-year-olds in the same country earned more than their parents did at age 30. Complete parts a to d below. (a) What is the probability a randomly selected 30-year-old in 1970 earned more than his or her parents at age 30? The probability is . (Round to four decimal places as needed.) (b) What is the probability that two randomly selected 30-year-olds in 1970 earned more than their parents at age 30? The probability is . (Round to four decimal places as needed.) (c) What is the probability that out of ten randomly selected 30-year-olds in 1970, at least one did not earn more than his or her parents at age 30? The probability is . (Round to four decimal places as needed.) (d) What is the probability that out of ten randomly selected 30-year-olds in 2014, at least one did not earn more than his or her parents at age 30? The probability is . (Round to four decimal places as needed.) Next