Approximately 10% of the population is left-handed. What is the probability that exactly two students among the 20 students in a Statistics class is left-handed?

An economics professional body estimates that 80% of the students taking undergraduate economics courses are in favour of studying of statistics as part of their studies. If this estimate is correct, what is the probability that more than 790 undergraduate economics students out of a random sample of 1000 will be in favour of studying statistics?

If two people are chosen with replacement from the data, what is the probability that both are wearing athletic shoes and the second is a woman wearing dress shoes?

One half of the people in the United States own individual stocks. In a random sample of 12 people, what is the probability that the number owning individual stocks is less than 4.   Round to 3 decimal places.

Aaron Rodgers of the Green Bay Packers, three-time NFL MVP, completes 65% of his pass attempts. If the trials are independent, what is the probability that he will complete at least 9 of his next 10 passes?

A convenience store estimated that 22% of its customers come in to buy milk. What is the probability that out of the next 200 customers, 65 or fewer will buy milk?

65% of Americans drink one coffee a day. With a random sample of 45 Americans, what is the probability that at least 80% of people drink a coffee a day?

What's the probability that a randomly selected American household has 5 or fewer people?

A recent study reported that the prevalence of hyperlipidemia is 30% in children. If 12 children were apart of this study, what is the probability that three are hyperlipidemia?

It is believed that 42% of American cell phone users have some version of an iPhone. If a random sample of 250 Americans with cell phones is taken, what is the probability the sample proportion of iPhone users will be greater than 45.5%?