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.      What is the probability that all of the selected adults save nothing for retirement? b.      What is the probability that maximum five of the selected adults save nothing for retirement? c.      What is the probability that at least one of the selected adults saves nothing for retirement? d.      What is the expected number of adults who save nothing for retirement?

Q: 2. The probability that a randomly selected student in your class watched something on Netflix at…

A:

Q: A presidential candidate plans to begin her campaign by visiting the capitals in 3 of 48 states.…

A: From the provided information, The total number of cases that she selects the route of three…

Q: Based on experience, 60 percent of the people who enter a shoe store make a purchase. In a random…

A: 60 percent of the people who enter a shoe store make a purchase. Hence the probability that a…

Q: 10. At John F. Kennedy Elementary School, 81% of students buy their lunch. In a randomly selected…

A: We have given that p = 0.81 n = 22 X ~Binomial(n, p) X ~ Binomial (22, 0.81)The PMF of the Binomial…

Q: In a random group of 5 individuals, what is the probability that at least two of them have the same…

A: We have given that the group of 5 individuals.

Q: In a secondary school, 58% of students who is studying in an art course have purchased a drawing…

A: We have to find the probability that at least 90 of them have purchased a drawing board..

Q: According to the National Highway Traffic Safety Administration, 83% of Americans used seat belts…

A: In this question it has given that,Probability (that Americans use seat belt belts regularly) =…

Q: A presidential candidate plans to begin her campaign by visiting 3 of 44 states. What is the…

A:

Q: A week before the bill was passed, a journalist wants to survey 36 congresspersons to determine the…

A: The term probability is defined as the chance of occurrence of an event. The probability value…

Q: According to a national​ study, 32​% of taxpayers used computer software to do their taxes for a…

A: From the given information, 32​% of taxpayers used computer software to do their taxes for a certain…

Q: Fifty-three percent of all people in the US have at least some college education. If 20 people are…

A:

Q: According to a survey conducted by TD Ameritrade, one out of four investors have exchange-traded…

A:

Q: An electrical system consists of fourcomponents as illustrated. What is the probability that the…

A:

Q: The Statistical Bulletin reports that 22.5% of the households in the country are inhabited by one…

A: See below hand written answer: hgyukj

Q: According to some estimates, approximately 34.3% of the American population has A+ blood.  Suppose…

A: We have to find given probabaility.

Q: According to one study conducted at the University of Texas, 70% of all Americans can do routine…

A: p = 0.7 n = 8

Q: The newspaper reports that among individuals in the 18 to 22 age, 25% drink coffee. If 400 people of…

A: Given,n=400p=0.25q=1-0.25=0.75np=400×0.25=100≥5nq=400×0.75=300≥5we can use normal…

Q: Nineteen of the 100 digital video recorders (DVRS) in an inventory are known to be defective. What…

A: Given that  Number of Defective digital video recorders = 19 Total video recorders (n) = 100   We…

Q: The National Coffee Association reports that among individuals in the 45 to 55 age, 70% drink…

A:

Q: According to a 2018 survey, 74 percent of employed young adults expect to bring work on a vacation…

A:

Q: Suppose that General Mills has a promotion in which one randomly selected miniature action figure is…

A: There are 5 distinct action figures. The probability distribution of the 5 boxes to receive a…

Q: In a survey of 1100 female adults (18 years of age or older), it was determined that 341 volunteered…

A: There are 341 adult females who volunteered at least once in the past year among 1100 females.   The…

Q: From a group of graduate students including 21 men and 11 women, 26 are chosen to participate in an…

A: Given Information: Number of men = 21 Number of women = 11  Total  = 21 +11 =32

Q: According to a certain​ country's department of​ education, 39.9​% of​ 3-year-olds are enrolled in…

A: Given that According to a certain​ country's department of​ education, 39.9​% of​ 3-year-olds are…

Q: A presidential candidate plans to begin her campaign by visiting the capitals in 3 of 43 states.…

A:

Q: From a standard deck, what is the probability of picking either a face card or a spade? Show all…

A: Total number of cards =52

Q: A marketing survey indicates that 40% of the population owns an automobile, 45% owns a house, and…

A: Given data:     The percentage of the population owns an automobile is: P(A)=40% The percentage of…

Q: According to the Australian Bureau of Statistics, during a particular year, the country’s population…

A: The mean is, μ=np=200×0.226=45.2 The mean is 45.2 The standard deviation is,…

Q: A presidential candidate plans to begin her campaign by visiting the capitals in 4 of 42 states.…

A: From thegiven  information  A presidential candidate plans to begin her campaign by visiting the…

Q: A poll is given, showing 75% are in favor of a new building project. If 9 people are chosen at…

A: Given data, p=75% =0.75 If n=9 then P(X=6)=?

Q: According to a survey, 87% of all U.S. households own a TV set. In a random sample of 22 households,…

A:

Q: A securities analyst claims that, given a specific list of 6 common stocks, it is possible to…

A: Given: A securities analyst claims that, given a specific list of 6 common stocks, it is possible to…

Q: The Association reports that among individuals in the 48 to 55 age, 45% drink coffee. If 200 people…

A: let X: number of coffee drinkers…

Q: A survey reports that 53% of college students use Google as their search engine. If 100 students of…

A: Given that n=100 p= 0.53 q= n-p=0.47 μx= n*p= 53 Standard deviation= σ= sqrt(n*p*q)=4.991   Add…

Q: In the United States, voters who are neither Democrat nor Republican are called Independent. It is…

A: Let X be the random variable from binomial distribution with probability (p)= 11% = 0.11 and sample…

Q: It is known that in a batch of milk cartons, 30% are underfilled. In a sample of six milk cartons…

A: Given that the batch of milk cartons underfilled is 30% and there are sample of six milk cartons.…

Q: According to data on the sale of Vehicles in Barbados, it was calculated that men purchase 75% of…

A: From the provided information, Men purchase 75% of vehicles in Babados (p) = 0.75 Sample size (n) =…

Q: It is estimated that 10% of the world population is left-handed. If 3 people were randomly selected,…

A: The probability that the only left-handed individual is the third person selected is computed as…

Q: In a New York Times article a reporter stated that seventy three percent of its readers favored the…

A:

Q: Eight of the 50 digital video recorders (DVRs) in an inventory are known to be defective. What is…

A: It is given that 8 of the 50 digital video recorders in an inventory are known to be defective.

Q: What is the probability that Kelsey reaches in the bag and randormly selects a red marble? What is…

A: Numbet of green marbles = 17 Number of blue marbles = 14 Number of yellow marbles = 8 Number of red…

Q: According to Waste Management, 70% of all people recycle. If I send out 150 surveys and they all…

A: Let x follows binomial distribution with parameters n = 150 and p =0.70   The pdf of binomial…

Q: According to the American Automobile Association (AAA), 5.3% of Americans plan to travel by car over…

A:

Q: According to a survey conducted by Deloitte in 2017, 0.4532 of U.S. smartphone owners have made an…

A:

Q: Sixty-three percent of U.S. households have a personal computer. In a random sample of 400…

A: Let p be the proportion of households have a personal computer. Given that p = 0.63 Let X denote the…

Q: A poll is given, showing 65% are in favor of a new building project. If 9 people are chosen at…

A: Let X be the number of people who are in favor of a new building project which follows binomial…

Q: In a survey of 1200 college students living in the dorms, 600 said that they had only a tablet in…

A:

Q: According to a study done at Otago University Wellington, the probability a randomly selected…

A: Obtain the probability that at least 3 of the people will not cover their mouth when they sneeze.…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.