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QUESTION 29 A study at a college in the west coast reveals that, historically, 45% of the students are minority students. If a random sample of size 75 is selected, what is the probability that more than half of the students in the sample will be minority students? QUESTION 30 According to Gallup's annual poll on personal nances, while most U.S. workers reported living comfortably now, many expected a downturn in their lifestyle when they stop working. Approximately 55% said they have enough money to live comfortably now and expected to do so in the future. If you select a sample of 200 U.S. workers, the probability is 90% that less than what sample percentage will say they expect to live comfortably? QUESTION 31 A survey found that 57% of respondents are more likely to buy stock in a U.S. corporation, or shop in one of its stores, if it is making an effort to publicly talk about how it is becoming more sustainable. Suppose you select a sample of 1 00. What is the probability that in the sample, between 52% and 62% are more likely to buy stock in a U.S. corporation. or shop in one of its stores, if it is making an effort to publicly talk about how it is becoming more sustainable