According to the statistics, 22% of cars in the city were at least 12 years old in 2004. Assume that this result holds true for the current population of all cars in the city. Random sample of 500 cars are selected at random. Approximate the probability that 90 to 95 cars are at least 12 years old?

Q: In a large population, 51 % of the people have been vaccinated. If 5 people are randomly selected,…

A:

Q: The coach of a running team thinks that 45% of athletes can run a mile in under 7 minutes. A simple…

A: Given problem Given that   The coach of a running team thinks that 45% of athletes can run a mile…

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

A: Solution: Let X be the random variable that students taking undergraduate economics courses are in…

Q: In a large population, 64% of the people have been vaccinated. If 4 people are randomly selected,…

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Q: Find the probability that a randomly selected student was female given that the student earned a…

A: Given:    A B C total  Male 2 19 20 41 Female 7 4 8 19 Total 9 23 28 60

Q: According to a survey, 70% of adults believe that every university student should take at least one…

A: a) Given information: p=70%=0.70 n=sample size=14 Let X be the number of adults hold to view follows…

Q: The median age of residents in a certain town is 33 years. If a survey of 100 randomly sampled…

A: In the given data since the median value is 33 years, we can say that the probability of any…

Q: The average number of automobiles per minute stopping for a gas at a particular service station…

A: Given Information: The average number of automobiles per minute stopping for a gas at a particular…

Q: According to a candy​ company, packages of a certain candy contain 18​% orange candies. Find the…

A: The proportion of orange candies in a certain package is : p=0.18 The sample size is given to be…

Q: In a large population, 57 % of the people have been vaccinated. If 5 people are randomly selected,…

A: We have given that  Sample size n= 5 Success of probability p=57%=0.57 X~binomial ( n ,p)

Q: Obtain the probability distribution of X that shows the number of heads in a three tosses of a coin.

A: Consider X be the random variable that could take the values 0, 1, 2 and 3. The sample space could…

Q: In a large population, 53 % of the people have been vaccinated. If 4 people are randomly selected,…

A: Given information- Given problem is of binomial distribution. Probability of success, p = 0.53 No.…

Q: Based on historical data, your manager believes that 37% of the company's orders come from…

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Q: . A nationwide survey of college seniors by the University of Michigan revealed that almost 70%…

A: Given that n =12,p=0.7 a. find the p( 7<=x<9) =? b. find the p(x<=5) =? c. find the p(…

Q: Suppose that 18% of people that enter a car dealership buy a car that day from that dealer. What is…

A: According to central limit theorem, the sampling distribution of sample proportion follows the…

Q: According to a poll of​ adults, about 4848​% work during their summer vacation. Assume that the true…

A: From the given information, it is clear that sample size, n = 600.The probability of success, p hat…

Q: Twenty percent of all undergraduates at a university are chemistry majors. In a random sample of…

A: Given information:Population proportion (p) = 20%                                         p =…

Q: In a large population, 57 % of the people have been vaccinated. If 3 people are randomly selected,…

A: It is given that 57% of the people have been vaccinated. A sample of 3 is considered. At least one…

Q: In a large population, 61% of the people have been vaccinated. If 5 people are randomly selected,…

A: From the given information, Sample size (n) = 5, Probability of success (p) = 0.61.

Q: A computer shop has noted that they have an average of 8 customers per hour. What is the probability…

A: Given information Average of 8 customers per hour No of customer in two hour is given by

Q: The average number of cars arriving at a drive-thru fast food restaurant is 3 in ten minutes, what…

A: GivenAn average no.of cars arriving at a drive-thru fast food restaurant is 3 in tenminutesλ=1.5 for…

Q: A telephone switch board in a firm receives on a average 90 calls per hour. Find the probability…

A: X~ Poisson (lemda=90) Pd.f. of X is given by, p(x)= e-lemda(lemda)x/X!

Q: what is the probability more than half of the sampled students are working full time?

A: Assume sixty percent of all NKU students work full time. If a random sample of 70 NKUstudents is…

Q: The mean number of customers arriving at a bank during a 15-minute period is 10. Find the…

A: Suppose random variable X defines the number of customers arriving at a bank during a 15-minute…

Q: In a large population, 64% of the people have been vaccinated. If 3 people are randomly selected,…

A:

Q: A survey was conducted to determine the proportion of Grade 11 students who engage in under-age…

A: We have given that p = 0.70 n = 100 We have to calculate  P(x> 0.65)

Q: According to an American Laser Centers survey, 32% of adult men said that their stomach is the least…

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Q: A meteorologist found from the past year’s records that it rained 17% of the days. Based on this…

A: Let X= number of days rained  Number of observation= 15  probability of X= p = 0.17  So, X follows a…

Q: Sixty percent of all children in a school do not have cavities. The probability, rounded to four…

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Q: In a large population, 58% of the people have been vaccinated. If 3 people are randomly selected,…

A: Given, 58% of the people have been vaccinated. that is

Q: In a large population, 68% of the people have been vaccinated. If 5 people are randomly selected,…

A: P(vaccinated) = 68% = 0.68Sample size = 5

Q: In a large population, 67 % of the people have been vaccinated. If 4 people are randomly selected,…

A: Let us denote X=the number of people who have been vaccinated n=sample size= 4 p=probability of…

Q: In a retirement community, 13% of cell phone users use their cell phones to access the internet. In…

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

A: Z-score for proportion:

Q: Suppose that a box contains five red balls and ten blue balls. If seven balls are selected at random…

A: As per company term and conditions we can answer only one question please  raise another ticket for…

Q: According to police sources, a car with a certain protection will be recovered 90% of the time. If…

A: Introduction:Consider the event of recovering a stolen car with the protection as a “success”.For a…

Q: Of all 3- to 5-year-old children, 56% are enrolled in school. If a sample of 500 such children is…

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Q: Calculate the probability that the wire selected to be used in the project is not made from copper.…

A: The data is given by   10 12 14 Total Copper 0.12 0.09 0.11 0.32 Iron 0.05 0.15 0.10 0.30…

Q: A nationwide survey of college seniors by a university revealed that almost 70​% disapprove daily…

A: Let's assume,  p= probability that seniors by a university disapprove daily pot smoking  n = number…

Q: Based on historical data, your manager believes that 26% of the company's orders come from…

A:

Q: In a large population, 68 % of the people have been vaccinated. If 3 people are randomly selected,…

A: Given that, 68% of the people have been vaccinated. Probability, p = 68% = 0.68 Sample size, n = 3

Q: Suppose it has been determined that the probability is 0.8 that a rat injected with cancerous cells…

A: Suppose it has been determined that the probability that a rat injected with cancerous cells will…

Q: Find the probability that a driver with at least one collision in the past year is a middle aged…

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Q: In a large population, 69% of the people have been vaccinated. If 3 people are randomly selected,…

A: Given, 69% of the people have been vaccinated => p = 0.69 3 people are randomly selected => n…

Q: In a large population, 56% of the people have been vaccinated. If 5 people are randomly selected,…

A:

Q: A baker bakes 100 loaves of bread in a day, 10 of which weigh less than they should. An inspector…

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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.