If couples are selected at random from the population, what is the probability that the first couple with twins is randomly selected on or before the 3rd selection?

Q: It has been found that 2 out of every 10 people who visit a local store purchase juice. If we…

A: Let x follows binomial distribution with parameters, The pdf of binomial distribution is, The…

Q: A population of women has 40% with dark eyes. If a sample of 20 women are selected from this…

A: Given: p=0.4 n=20 Let X~B(n,p)

Q: In a certain community, 8% of all adults over 50 have diabetes. If a doctor in this community…

A: Introduction - Probability - Probability defines the likelihood of occurrences of an event . There…

Q: In a recent study, 29% of people surveyed indicate chocolate was their favorite flavor of ice cream.…

A:

Q: In a given year, 2,264,724 males and 2,124,694 females were born in a certain country. If a child is…

A: Number of male born in that given year: NM=2264724 Number of female born in that given year:…

Q: Given that 58% of all gold dealers believe next year will be a good one to speculate in South…

A:

Q: A recent poll  found that 30% of those surveyed are worried about aggressive drivers on the road. If…

A: Given that, A recent poll found that 30% of those surveyed are worried about aggressive drivers on…

Q: A recent survey examined the use of social media platforms. Suppose the survey found that there is a…

A: The probability of union of two sets are given as, P(A or B) = P(A) + P(B) – P(A and B).

Q: In a science class of 35 students, 15 are boys and 20 are girls. On a unit test, 5 boys and 8 girls…

A: We will use probability formula to find solution to the problem .

Q: A jury of 12 people is selected randomly from the population. If it is known that approximately half…

A: Solution

Q: On a deck of 52 playing cards, what is the probability of drawing either a heart or a club, then a…

A:

Q: In a given​ year, 1,895,051 males and 1,792,212 females were born in a certain country. If a child…

A: Given Data: The number of males born is: n(M)=1895051 The number of female born is: n(F)=1792212 The…

Q: In Canada, 63% of households speak English as their primary language, and 23% speak French as their…

A:

Q: About IO percent of the population is left-handed. Ofthose who are right-handed, about 40 percent…

A: Multiplication Rule:Multiplication rule for two dependent events A, and B is given by:

Q: Suppose a group of students take an influenza test and 96% of the students test positive. What is…

A: Given that Student tested positive = 96% I.e probability of students tested positive is =0.96

Q: A. If we took a random sample of a single individual from this population, what is the probability…

A: Let X be the number of yellow flowers which follows binomial distribution. The probability of…

Q: Recent research suggests that 73% of Americans have a home phone, 83% have a cell phone, and 58% of…

A: Given:

Q: In a study by Peter D. Hart Research Associates for the Nasdaq Stock Market, it was determined that…

A: e) The sample size n is 20. The probability of U.S adults invest in mutual funds (p) is 0.40.

Q: Past records of a factory show that 4% of the candles produced are defective. What is the…

A:

Q: Assume that in a group of 12 individuals, seven prefer football and five prefer cricket. A random…

A: Given : n = individuals = 12 football = 7 cricket = 5 a) Exactly two prefer football : =C27×C15C312…

Q: The proportion of eligible voters in the next election who will vote for the incumbent is assumed to…

A: Given information- Sample size, n = 510 The proportion of eligible voters = 0.54 Now, from Binomial…

Q: On a True/False quiz, what is the probability of guessing 5 out of 10 questions correctly? This is…

A:

Q: In the United States, 75 percent of adults wear glasses or contact lenses. A random sample of 10…

A: A random variable X, is said to follow binomial distribution if the probability mass function of X…

Q: In a city of 120,000 people there are 20,000 Norwegians. What is the probability that a randomly…

A: Total number of people, N=120,000 Number of Norwegians, n=20,000 The objective is to find the…

Q: A baby born in 2011 is randomly selected. What is the probability that the baby was born in March?

A:

Q: accounting professor claims that no more than one quarter of undergraduate business students will…

A:

Q: In the experiment of flipping a coin four times, what is the probability of obtaining odd number of…

A: Let A and B be two events with P(A) > 0. Then the conditional probability of B given A, denoted…

Q: Fifteen percent of the students at Central High take Spanish, 12% take French, and 4% take both. If…

A: SOLUTION-

Q: In a certain science degree program, 25 percent of the students failed their mathematics exam, 15…

A:

Q: In a certain high-risk group, the chances of a person having suffered a heart attack are 55%. If 6…

A: From the given information, probability of success is given by as follows: p=0.55 n=6 x=1…

Q: In a group of 10 people chosen randomly, what is the probability that three of the ten people have a…

A: Given: Number of trials (n) = 10 Probability of success (p) = 11000000=0.000001 Let X be the number…

Q: At Denver international airport, 81% of recent flights have arrived on time. A sample of 12 flights…

A:

Q: In a random survey of 20 students, find the probability that exactly 17 of them will say that they…

A: Given: Total number of students in survey n=20 Number of students say that they do not get enough…

Q: next problem with the production line diagnosed as being due to an initial repair that was…

A:

Q: A six-sided die is weighted so that rolling a two, four, or six is equally likely. In addition,…

A: Given information- We have given a six-sided die. We have given that rolling a two, four or six is…

Q: about 7% of the population of a large country is nervous around strangers. If two people are…

A: The probability that both are nervous around strangers is,

Q: It is known that approximately 90% of the population is right-handed. In a sample of 100 people,…

A:

Q: In the St. Petersburg Community College, 30% of the men and 20% of the women are studying…

A: Let M=a student is menW=a student is womenE=a student is studying…

Q: Suppose that in the small state of Rhode Island in the USA, the average number of women suffering…

A:

Q: Given that 58% of all gold dealers believe next year will be a good one to speculate in South…

A:

Q: The proportions of blood phenotypes A, B, AB, and O in the population of all Caucasians in the…

A: From the provided information, P (A) = 0.40, P (B) = 0.11, P (AB) = 0.04 and P (O) = 0.45

Q: Given that 20 books in a shipment of 200 books contain misprints, and you buy three of them. What is…

A:

Q: Researchers at a reputable university and a reputable health organization claim that approximately…

A: Binomial distribution: A discrete r.v. X taking values 0,1,2,3, …., n is said to follow a binomial…

Q: If a ball is selected at random from an urn containing three red balls, two white balls, and five…

A: According to the provided information, there are 3 red balls, 2 white balls, and 5 blue balls

Q: In a marketing research survey, people are interviewed about product usage. One of the questions is…

A: Given: Probability of brand A, P(A)=14%P(A)=0.14 Probability of brand B, P(B)=9%P(B)=0.09 The…

Q: Statistics released by a reputable traffic safety organization show that on an average weekend…

A: Answers: a) The probability is 0.0011 b) The probability is 0.0222 c) The probability is 0.3693

Q: In one town, 81% of all voters are Democrat. If two voters are randomly selected for a survey, what…

A: It is given that the percentage of voters are Democrat is 81%.

Q: In a city of 180,000 people there are 20,000 legal immigrants from Latin America. What is the…

A: Given: The total number of people in a city are N=1,80,000. The number of legal immigrants from…

Q: According to the American Dental Association, 60% of all dentists use nitrous oxide in their…

A: Given Data population proportion,p = 0.6 sample size n = 600