According to a poll released by a global polling firm, 80% of Americans believes that the government is handling the Covid-19 crisis “well”. Let a random sample of 25 Americans be selected. What is the probability that there are exactly 20 Americans in the sample who believed that the government handles the crisis well? Identify the type of probability distribution shown in the problem:binomial, hypergeometric, Poisson Identify the given in the problem and solve for the probability.

Q: According to a Wakefield Research survey of adult women, 50% of the women said that they had tried…

A:

Q: A stationary store has decided to accept a large shipment of ball-point pens if an inspection of 17…

A: Binomial distribution: The binomial distribution gives the probability of number of successes out of…

Q: A survey conducted by the Consumer Reports National Research Center reported, among other things,…

A:

Q: According to a Wakefield Research survey of adult women, 50% of the women said that they had tried…

A:

Q: A machine that manufactures automobile parts produces defective parts 15% of the time. If 10 parts…

A: Given : P = 0.15 n = 10

Q: According to a Wakefield Research survey of adult women, 50% of the women said that they had tried…

A:

Q: A recent estimate suggested that, of all individuals and couples reporting income in excess of…

A: Binomial Distribution: If we have n trials each having two outcomes, say Success and Failure, trials…

Q: A stationary store has decided to accept a large shipment of ball-point pens if an inspection of 16…

A:

Q: In a factory,that produces glass bottles, HH number of bottles are defected in 1000 bottles…

A: For letter n (For M, N, O) Number of defected bottle in 1000 bottles= HH= 5 Probability of defective…

Q: According to the chemical engineering development report, approximately 30% of all power failures in…

A: Given: Probability of success (p)=0.30 Number of trials (n)=20 Consider X be the random variable…

Q: According to a​ survey, about 24​% of adults in a certain country are pessimistic about the future…

A: Given Information: 24​% of adults in a certain country are pessimistic about the future of marriage…

Q: A stationary store has decided to accept a large shipment of ball-point pens if an inspection of 19…

A:

Q: A manufacturing process that produces electron tubes is known to have a 10% defective rate. Suppose…

A: X~B(n,p)P(X=x)=nxpx(1-p)(n-x)    x=0,1,2,3,...,nE(x)=mean=npvariance=np(1-p)

Q: t an uncontrolled T- junction, it is seen that on an average, 2 vehicles turn to the right in each…

A: Given: Average number of vehicles in 120 seconds λ=2 Let X be the number of vehicles arriving in 120…

Q: A statistics professor finds that when he schedules an office hour at the​ 10:30 a.m. time​ slot, an…

A: Givenan average of three students arriveλ=3x~poisson(λ=3)P(X=x)=e-λ×λxx!  ; x≥0

Q: A recent survey found that 30% of IRSC students plan to go on a vacation after graduation. Suppose 5…

A: If each trial has only two possible outcomes, that is, success and failure, the probabilities of…

Q: Upon studying low bids for shipping contracts, a microcomputer manufacturing company finds that…

A: Given information X denotes bidding amount. X ~ Uniform (α = 20, β = 25) Uniform distribution

Q: what is the probability that at least two people have the same birthday?

A: Given,A room has 30 people.n = 30.Not a leap year N = 365.Probability that at least 2 people have…

Q: A vendor of seeds has purchased a stock of seeds of an exotic flower, and wants to estimate the…

A: Let X be a random variable such that X~Bin15, p Therefore, the likelihood is given as L=…

Q: 2. Willow Brook National Bank operates a drive-up teller window that allows customers to complete…

A: The Poisson probability distribution with an arrival rate of 24 customer per hour or 0.4 customer…

Q: a. at most 7 Round your answer to four decimal places. P( at most 7)= Enter you answer; P(at most…

A: The probability that the number of women in this sample of 11 who had tried five or more diets in…

Q: A recent study suggested that 70% of all eligible voters will vote in the next presidential…

A: It is given that n =20 and p =0.70.

Q: A stationary store has decided to accept a large shipment of ball-point pens if an inspection of 19…

A: (a) Consider that shipment is accepted if no more than two defective pens

Q: If the random variable X has a Poisson distribution where the lambda equals 7, Then the probability…

A: Givenλ=7x~poisson(λ=7)P(X=x)=e-λ×λxx!   x≥0

Q: An operating with an 80% success rate is preformed on 8 patients. Assuming that the binomial…

A:

Q: (b) Ten per cent of the tools produced in a certain manufacturing process turn out to be defective.…

A:

Q: According to a survey, about 24% of adults in a certain country are pessimistic about the future of…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…

Q: The research department of a commercial bank estimates that the 5% of its loans will go into…

A: Given: Proportion of default loans estimated by research department  (θ) = 0.05 Number of customers…

Q: What is the probability that the project will take between 28 and 32 months? If required, round your…

A:

Q: On the island of Lilliput, a sample random sample of 500 people reveals that 450 of them prefer to…

A: Given data : x1= 450.0 n1= 500 x2= 885.0 n2= 1000

Q: In a factory,that produces glass bottles, 5 number of bottles are defected in 1000 bottles produced.…

A: Given: 5 number of bottles are defected in 1000 bottles produced. The objective is, To find the…

Q: mufflers for cars offers a lifetime warranty on its products, provided that ownership of the car…

A:

Q: A stationary store has decided to accept a large shipment of ball-point pens if an inspection of 16…

A: Let the R.V X denotes the number of defective pens and it follows the binomial distribution with…

Q: A stationary store has decided to accept a large shipment of ball-point pens if an inspection of 15…

A:

Q: A. Suppose a certain survey reported that 35% of Zambian households have at least one high…

A: Giveni)p=0.35n=16q=1-p=1-0.35=0.65using normal approximationMean(μ)=n×p=16×0.35=5.6standard…

Q: According to a candy​ company, packages of a certain candy contain 24​% orange candies. Find the…

A: A candy​ company, packages of a certain candy contain 24​% orange candies. That is, p=0.24. The…

Q: A factory received a shipment of 15 capacitors, and the vendor who sold the items knows there are 8…

A: Given ,      The probability of defective capacitors = 815     i.e P = 815 = 0.533a) ut 'x' be the…

Q: Based on the dotplot of the simulation results and the pool player’s last 20 games, which conclusion…

A:

Q: 2. Willow Brook National Bank operates a drive-up teller window that allow customers to complete…

A: Mean arrival rate is λ=0.4 Mean service rate is μ=0.6 Utilization of the system is p=λμ=0.40.6=23

Q: In a factory,that produces glass bottles, HH number of bottles are defected in 1000 bottles…

A: Given, Number of defective bottles = 2 (N) Total no. of bottles = 1000

Q: A machine that manufactures automobile parts produces defective parts 13% of the time. If 8 parts…

A:

Q: Suppose that only (10+2) % of all washing machines of a certain type need replacement during the…

A: Let X be the washing machines having defect.  Given that, n=5600, p=0.12 X ~ B(n=5600, p=0.12) a)…

Q: A factory received a shipment of 15 capacitors, and the vendor who sold the items knows there are 8…

A: Given, A factory received total 15 capacitors In that there are 8 capacitors are defective

Q: 2. Willow Brook National Bank operates a drive-up teller window that allows customers to complete…

A: Given: The arrivals to the drive-up teller window follows Poisson probability distribution with…

Q: What is the probability that three Poisson random independent variables A,B, C, with parameters 1,…

A:

Q: Assuming 10% rate, 12 people are randomly selected. Find the probability that at least 10 in 12…

A:

Q: According to a recent Gallup Poll, 75% of Americans report that they are better off financially…

A: Given data p=75% n=230

Q: It is known that the frequency of a database server experiencing a Poisson distributed error with an…

A: Poisson distribution describes the occurrence of rare events. The poison formula is referred to as…

Q: Willow Brook National Bank operates a drive-up teller window that allows customers to complete bank…

A: AS PER POLICY I SHOULD HAVE TO CALCULATE FIRST 3 SUBPART ONLY EVEN THOUGH I HAVE CALCULATED 4 Here…

Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.