Americans Saving for Retirement. According to a 2018 survey by Bankrate.com,20% of adults in the United States save nothing for retirement (CNBC website). Suppose that 15 adults in the United States are selected randomly. a. Is the selection of the 15adults a binomial experiment? Explain.  b. What is the probability that all of the selected adults save nothing for retirement? c. What is the probability that exactly five of the selected adults save nothing for retirement? d. What is the probability that at least one of the selected adults saves nothing for retirement?

Q: A sixth grade class has 30 students. 15 of those students play baseball, 18 play basketball, and 10…

A: As per the rules of probability, PA∪B=PA+PB-PA∩B, where PA∪B denotes either A or B or both. PA ∩B…

Q: suppose that 64% of people own dogs. If you pick two people at random, what is the probability that…

A: Solution: Given information: Let A be the event that people having own dog P(A)= 0.64

Q: 2016, 48.3% of college students voted.  What is the probability of getting 40 or fewer students who…

A: Number of trail n=100Probability of success p=0.483

Q: 40% of homeowners own AC. If 15 people are selected at random, what is the probability that at most…

A: We have given that the Binomial distribution with parameters p=40%= 0.40 and n=15.   The pmf of…

Q: according to a survey, 34.8% of babies born in the US were still being breastfed at 6 months of age.…

A:

Q: Among the adults in a large city, 30% have a college degree. A simple random sample of 100 adults is…

A:

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

A:

Q: 88% of adults are high school graduates.  If a random sample of 10 adults is chosen, find the…

A: p=0.88sample size(n)=10Let "x" no. of adults are graduatesx~Binomial(n=10,p=0.88)P(X=x)=

Q: Suppose that 84% of students in a college have a smart phone. If you select three students at…

A: sample size(n)=3 p=0.84 Let "x" be no.of students have a smart phone x~Binomial(n=3,p=0.84)…

Q: Eight percent of Americans have a master’s degree. If five Americans are selected at random, what is…

A: Let X represent random variable   n=5 p=0.08   X~ binomial (5, 0.08)

Q: In a nearby​ town, 68​% of adults have health insurance. If 7 adults are randomly selected from the​…

A: Here p =P(having health insurance) = 68% =0.68

Q: Six percent of American adults are considered millionaires. If 100 randomly selected adults are…

A: Here it is given that 6% of American adults are millionaire. We need to find the probability of 7 or…

Q: Assume that 15​% of people are​ left-handed. Suppose 12 people are selected at random. What's the…

A: Given : Probability of success,p = 0.15 Probability of failure,q=(1- 0.15 )= 0.85…

Q: It has been reported that 3% of all cars on the highway are traveling at speeds in excess of 70 mph.…

A: 3% of all cars on the highway are travelling at speeds of excess 70 mph. Hence probability that a…

Q: Suppose that 66% of people own dogs. If you pick two people at random, what is the probability that…

A: We want to find what is the probability that they both own a dog?

Q: Select one card from a deck of well-shuffled cards. What is the probability we select a face or a…

A: Given : Let A be the event of getting face card from a deck of well-shuffled cards  P(A) = 1252 Let…

Q: 20.  In a large shipping company, 70% of packages arrive to their destination on time.  If 9…

A: Solution Let X : packages arrive to their destination on time  And X ~ Binomial (n=9, p=0.70) Ans we…

Q: Suppose that 37% of people own dogs. If you pick two people at random, what is the probability that…

A: From the given information, it is clear that   The probability that people owns the dog=0.37.…

Q: Americans Saving for Retirement. According to a 2018 survey by Bankrate.com, 20% of adults in the…

A: Given Information: 20% of adults in United states save nothing for retirement. 15 adults in United…

Q: Suppose that 53% of people own dogs. If you pick two people at random, what is the probability that…

A:

Q: Social Networking Based on data from the Pew Internet Project, 74% of adult Internet users use…

A: The probability of getting an adult Internet user who uses the social networking sites is 74%.

Q: games. Suppose they play seven games against the New York Islanders in a season. What is the…

A: It is given that the probability of win the games is p = 63.4% = 0.634 of the New York Rangers. The…

Q: Suppose that 55% of people own dogs. If you pick two people at random, what is the probability that…

A: Let p be the probability that a person owns dog. Given that p = 0.55 Let X denote the number of…

Q: About 10% percent of workers (ages 16 years and older) in the United States commute to their jobs by…

A: The objective of this question is to find the probability that exactly four out of eight randomly…

Q: Suppose 20% of business majors major in finance. You take a random sample of 3 business majors. What…

A: We have given that Probability (p) = 20% = 0.20 Number of trials (n) = 3 Let x = number of success…

Q: Suppose that 62% of people own dogs. If you pick two people at random, what is the probability that…

A: Number of trials n=2 Success of probability p=0.62 X~bin(n,p) nCx=n!/x!(n-x)!

Q: A colony of laboratory rats contain 16 white rats and 9 spotted rats.What is the probability of…

A: Introduction:Probability of an event is the number of outcomes favorable to the event, divided by…

Q: The probability that a house in an urban area will develop a leak is 55​%. If 22 houses are…

A: Let "X" be the houses that will develop a​ leak.

Q: 52% of dogs enjoy biting the mailman. Select 5 random dogs. What's the probability AT LEAST 1 Enjoys…

A: Given : p = 0.52 where p is probability of dogs enjoy biting the mailman. n = 5 let X be the dogs…

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

A: Here, n = 2 and p = 0.4.

Q: Suppose that 68% of people own dogs. If you pick two people at random, what is the probability that…

A:

Q: Sixty percent of clowns aren’t funny.   If you randomly encounter three different clowns, what is…

A: Multiplication rule for independent events:If two events A and B are independent then the…

Q: 31% of all college students major in STEM (Science, Technology, Engineering, and Math). If 44…

A: Given ,  The probability that the college students major in the STEM (Science, Technology,…

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.