Suppose that 75% of people in a certain metropolitan area live in the city and 25% of the people live in the suburbs. If 1200 people attending a certain concert represent a random sample from the metropolitan area, what is the probability that the number of people from the suburbs attending the concert will be fewer than 270?

Q: A four-person is selected at random from a population of 14 men and 16 women. What is the…

A:

Q: suppose that 10% of people are left handed. if 9 people are selected at random, what is the…

A: The random variable is left handed people. It follows binomial distribution. The sample size is 9.…

Q: It is believed that 20% of music teachers in New York own a car. 16 music teachers from New York are…

A:

Q: Among the adults in a large city, 34% have a college degree. A simple random sample of 100 adults is…

A:

Q: If 14% of active duty soldiers in the U.S. Army are women. Find the probability that none of the…

A: Let X be the number of women soldier in U.S army from binomial distribution with probability (p)=…

Q: An insurance company found that 16% of drivers were involved in a car accident last year. If 8…

A: Probability of drivers were involved in a car accident last year(p)=0.16sample size(n)=8Let "x" be…

Q: Suppose the probability of purchasing a defective smart phone is 0.04. What is the probability of…

A: Introduction: Denote X as the number of defective smart phones obtained in a purchase of 20 smart…

Q: Suppose that a department contains 8 men and 12 women. A committee with six members is to be formed,…

A:

Q: Among teenagers old enough to drive, 35% have their own cars. If a marketing research team randomly…

A: We want to find the probability

Q: Suppose that 43% of people own dogs. If you pick two people at random, what is the probability that…

A:

Q: Suppose that 42% of people are on low calorie diet. If you pick three people at random, what is the…

A:

Q: In a certain coffee shop, each customer orders exactly one cup of coffee, and 60% of customers order…

A:

Q: A Supervisor of a pharmacy found that 30% of the workers receive their spending money from part –…

A: Obtain the probability that at least 3 of them will have part- time jobs. The probability that at…

Q: 75% of American adults received a speeding ticket. If a random sample of 20 adults is selected, find…

A:

Q: According to a study, 20% of corporate officers are women. Suppose that you select a random sample…

A:

Q: There is about a 10% chance of being left- handed. If there are 25 students in a class, find the…

A:

Q: Suppose that 40% of people own dogs. If you pick two people at random, what is the probability that…

A: Given that n = 2 ,p =0.4 P ( x =2 ) =?