Thirty-eight percent of all shoppers at a large department store are holders of the store’s charge card. If a random sample of 100 shoppers is taken, what is the probability that at least 30 of them will be found to be holders of the card

Q: In a Gallup Survey, 90% of the people interviewed were unaware that maintaining a healthy weight…

A: Given Information: 90% of the people interviewed were unaware that maintaining a healthy weight…

Q: Fifty-eight percent of American adults eat at a table-service restaurant at least once a week.…

A:

Q: In a survey of health insurers,  400 baby boomers and 600 pre-boomers were asked: do you believe…

A: Obtain the probability that he or she is a baby boomer, if a respondent chosen at random from those…

Q: In a company survey of 1000 skiers and bikers it is found that 80% like skiing and 60% like biking.…

A:

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

A:

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

A: Probability of selecting a person who has been vaccinated is 51% or 0.51 Number of observation = 5…

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

A:

Q: Thirty-five percent of the people who own cellphones use their phones to send and receive text…

A: Given,n=3p=0.35Let X=no.of people use their phones for textingX~Binomial(n=3 , p=0.35)P(X=x)=3x…

Q: Fifty-NINE percent of American adults eat at a table-service restaurant at least once a week.…

A: GivenNo.of American adults eat at a table service restuarant =0.59

Q: In a recent survey of a random sample of 437 California residents, 129 said they visited a state…

A: We want to find out the correct answer for given question

Q: In the city of Raccoon City, 65% of the population have been infected by a mutagenic pathogen known…

A: Here we need to find the probabilities associated with the corresponding binomial distribution.

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: Thirty percent of the students in Unix College is in favour of a ban on drinking in the dormitories.…

A: Let us assume that X= number of students who favor ban  X follows a binomial distribution with…

Q: A manufacturer has shipped 39 cameras to an electronics​ store, of which 3 are defective. If the…

A: As per above statement: No. of defective cameras: 3 No. of total cameras: 39 No. of cameras sold: 25…

Q: Seventy five percent of students at a collage with a large student population of Size 100 use the…

A:

Q: The air conditioner of 2 out of 10 cars in a car dealership is faulty. For a company that buys 4 of…

A: Giventhe air conditionerof 2 out of 10 carsis…

Q: Fifty percent of all technical assistants would like to have a PC. Eighty percent of all technical…

A: Given Information: 50% of all technical assistants would like to have a PC. That is PPC=0.50 80% of…

Q: Of all the students who take the CPA examination, one-fourth have a Master’s degree and the…

A: It is given that one-fourth have a Master’s degree and the remainder have Bachelor’s degrees. Half…

Q: A recent survey found that 62% of the households surveyed had internet access,68% had cable TV, and…

A: Given, A recent surveyA=households survyed has internet accessB= has cable TVPA=62%  =0.62…

Q: In testing an HP printer, the Quality Inspector found that 25% of the printers fail to pass the test…

A: Obtain the probability that fewer than 4 fail to pass the test print. The probability that fewer…

Q: 47 percent of students who made a resolution of passing college with high GPA achieved their…

A: Given that, n =155, p =0.47 The values of mean and standard deviation are,

Q: About 10​% of the population of a large country is nervous around strangers. If two people are…

A: The probability that a randomly selected people is nervous around strangers is 0.10. The probability…

Q: In the construction of midrise buildings, a safety engineer claims that only 40% of all workers wear…

A: Solve using Binomial distribution

Q: In a classroom survey, 18 out of 30 students reported that they have a car. What is the probability…

A:

Q: A box with 15 silicon chips contains five defective chips. If a random sample of three chips is…

A: Given problem Given that   A box with 15 silicon chips contains five defective chips. Total…

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

A:

Q: At a hot air balloon festival, Terrell made note of how many passengers were in each balloon and the…

A: We have to find out the probability for contingency table.

Q: Of all the students who take the CPA examination, one-fourth have a Master’s degree and the…

A: One-fourth of the students have a Master’s degree, the remaining students have Bachelor’s degree.…

Q: Suppose in a local Kindergarten through 12th grade (K - 12) school district, 53 percent of the…

A: Given Information: 53% of the population favour a charter school for grades K through 5. Sample size…

Q: Police records show that for a certain area in Arendale, when the driver of a car double parks, 60%…

A: Let X be the number of not allowed towed away  Let p be the probability of towed away=0.6  q be the…

Q: seventy-five percent of the students graduating from high school in a small will attend college. for…

A: A.   Z-score for proportion:

Q: Of all the students who take the CPA examination, one-fourth have a Master’s degree and the…

A: One-fourth of the students have a Master’s degree, the remaining students have Bachelor’s degree.…

Q: Fifty-three percent of all persons in the U.S. population have at least some college education.…

A: Given : Fifty-three percent of all persons in the U.S. population have at least some college…

Q: In a large population, 40 % of the people have been vaccinated. If 4 people are randomly selected,…

A:

Q: At a certain car dealership, 20% of customers who bought a new vehicle bought an SUV, and 3% of them…

A: It is given that, the proportion of customers who bought a new vehicle bought an SUV is 0.20 and the…

Q: Of all the students who take the CPA examination, one-fourth have a Master’s degree and the…

A: One-fourth of the students have a Master’s degree, the remaining students have Bachelor’s degree.…

Q: A) Calculate the probability that exactly 6 out of 10 randomly sampled 18- 20 year olds consumed an…

A: Given: p = probability that 18-20 year olds consumed alcoholic beverages in 2008 = 69.7% = 0.697.…

Q: In a given year 2,103,001 males and 2,325,160 females were born in a certain county. If a child is…

A: Number of males = 2103001 Number of females = 2325160 Total number of child = 2103001 + 2325160 =…

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

A:

Q: About 10% of all adults deliberately do a one-time fling and feel no guilt about it. In a group of…

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: In Norway, approximately 22% of vehicles are electric vehicles. Which is closest to the probability…

A:

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: In a management trainee program, 80 percent of the trainees are female, 20 percent male. Ninety…

A: It is important in statistics . It is widely used nowadays .

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: 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: (b) What proportion of the children were 35 months or older, but less than 45 months of age when…

A: Rearrange the data set and create a frequency table from the above data given.

Q: In a company that makes sports bikes, 90% of the bikes pass final inspection and 10% fail and need…

A:

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.