An economics professional body estimates that 75% 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 780 undergraduate economics students out of a random sample of 1000 will be in favour of studying statistics?

Q: From experience, an airline knows that only 73% of the passengers booked on a flight from New York…

A: There is only two possibilities either ticket booked(success) or not booked ( failure) If r.v is X ,…

Q: According to the 2009 current Population Survey conducted by the U.S. Census Bureau, 40% of the U.S.…

A: In question, Given that according to the 2009 current Population Survey conducted by the U.S. Census…

Q: The New York Times reported that 70% of adults know someone who has been exposed to coronavirus.…

A: Givenp=0.70n=20Let "x"be someone who has been exposed…

Q: It is estimated that 1 in 59 students in Canada have been diagnosed with Austism Spectrum Disorder.…

A: Given data: The expression for the probability that 1 in 59 students in Canada has been diagnosed…

Q: Given that a random person just tested positive, determine the probability of having this illness.

A: Here use tree diagram

Q: According to a research​ corporation, 46​% of women in a particular region suffer from holiday​…

A:

Q: In a recent​ survey, it was found that the median income of families in country A was $57,300. What…

A:

Q: A leading large college recently reported that 40.5% of its student body had concerns about the…

A:

Q: It has been estimated that 21% of Americans are smokers. If five American adults are chosen at…

A: From the provided information, It has been estimated that 21% of Americans are smokers that is p =…

Q: GreenFacts, a non-profit organization,reports that the average adult in Europe consumed 17 litres of…

A:

Q: An economics professional body estimates that 75% of the students taking undergraduate economics…

A:

Q: In any given sampling, there is a 54% chance that a new invasive fish to be sampled along with other…

A: Probability: Probability is a chance factor that can occurs at every outcome of a random experiment.…

Q: What is the probability that a randomly selected person from the population tests positive?

A: Let us define some events A : a person has cooties. B : a person does not have cooties. E : a person…

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: In a Gallop Poll, 35% of 30 - 49 states that they believe in ghosts. Find the probability that out…

A: (a) The probability that college students do not believe in ghosts is, P(do not believe in ghosts)…

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

A: From the provided information, Sample size (n) = 100 Probability (p) = 0.53 Now,

Q: Although studies continue to show diabetes leads to significant health problems, 20% of adults in…

A: Introduction: Denote X as the number of sampled adults who have diabetes. Assume that the n = 250…

Q: The Newspaper reports that among individuals in the 40 to 50 age, 45% drink coffee. If 200 people of…

A: Givenp=0.45n=200let "x" be the number of coffee…

Q: When purchasing boards from a wood supplier, it has been documented that 44% of the boards that are…

A: Given that  Sample size n =300 Population proportion p=44%=0.44

Q: It is estimated that 75% of all young adults between the ages of 18 and 35 do not have a landline in…

A: Givenp=0.75sample size(n)=100Let "x" be the adults do not own a…

Q: When one is randomly sampling four items from a population, what is the probability that all four…

A: (a). Compute the probability that all four elements will come from the top quartile of the…

Q: A poll showed that 50% of Americans say they believe that life exists elsewhere in the galaxy. What…

A: here given , A poll showed that 50% of Americans say they believe that life exists elsewhere in the…

Q: Forty percent of American adult women believe that meat from animals raised on genetically modified…

A: Formula : Binomial distribution is given by

Q: According to the Federal Insurance Agency statistics, the proportion of teenage drivers between the…

A: It is given that n=100 and p=0.54.

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

A:

Q: If a randomly selected person from the survey drives a what is the probability that he is a 'male"?

A: Solution

Q: In a recent year, 304 of the approximately 300,000,000 people in the United States were struck by…

A: a. In a recent year, 304 of 300,000,000 people in the United States were struck by lightning.

Q: A recent survey reported that 69% of Americans approve of human embryonic stem cell research. If an…

A: Given : Let A be the event of  Americans approve of human embryonic stem cell research. p ( A ) =…

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

A:

Q: According to a 2009 Reader's Digest article, people throw away about 12% of what they buy at the…

A: Let X be the proportion of things throw away that people bought at the store. The population…

Q: According to a 2009 Reader's Digest article, people throw away about 10% of what they buy at the…

A: Given information : Population proportion = p= 10% = 0.10 q = 1 - p    = 1 - 0.10 = 0.90 Sample size…

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: According to a recent study, 24% of the USA population is Catholic. The survey also shows that 71%…

A: Percentage of population is Catholic is 24%. Percentage of Catholic are Democrats is 71%. Percentage…

Q: According to a 2009 Reader's Digest article, people throw away about 11% of what they buy at the…

A: From the provided information, Mean (p) = 0.11 Sample size (n) = 90 The standard deviation can be…

Q: A politician running for Senate in California claims that only 34% of Californians approve of the…

A: Obtain the probability that more than 40% of those surveyed approve of the competitor. The…

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: A marketing research survey shows that approximately 80 percent of the car owner surveyed indicated…

A: Probability of an event is chances of occurrence of the event. Probability of an event is computed…

Q: it is estimated that 4800 of the 24,000 voting residents of a town are against a new sales tax. If…

A: Given: Number of residents against a new sales tax (x)= 4800 Total voting residents (N)=24000

Q: An economics professional body estimates that 80% of the students taking undergraduate economics…

A:

Q: Airlines report that 45% of its flights are on time.  In a random sample of 80 flights, what is the…

A: A random variable X is said to follow a binomial distribution with parameters 'n' and 'p' ( where n…

Q: According to a 2009 Reader's Digest article, people throw away about 10% of what they buy at the…

A: Given that,  n=93, p= 0.10 The mean and standard error of the sampling distribution of sampling…

Q: According to a poll of​ adults, about 40​% work during their summer vacation. Assume that the true…

A: From the given information, Sample size (n) = 500 Probability of success (p) or adult work during…

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

A:

Q: A market research organization surveyed 102 people and found that 73 of them would like more…

A: GivenThe total number of people the market research organization surveyed = 102 The total number of…

Q: A Gallup poll found that 73.2% of people in the US believe in hell. What is the probability that a…

A: Given that  A Gallup poll found that 73.2% of people in the US believe in hell  P(Believe in hell) =…

Q: If the rework percentage increases to 4%, what is the probability that all 20 samples do not require…

A: 1. Let , X be the number of parts in the sample that does not require rework. Here , X→B(n=0.01 ,…

Q: Suppose 42% of the banks in Switzerland are private organizations.   If a sample of 442 banks is…

A: It is known that, the mean of the sampling distribution of p-hat is equal to the population…

Q: A recent survey found that 70% of all adults over 50 wear glasses for driving. In a random sample of…

A: Let the random variable X be the number of wear glasses. X takes values 0,1,2,.....,10 . p =…

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.