Construct a 99% confidence interval for the proportion of all motorbike license applications that are misplaced by the department of transport, if a survey found that 20 out of a sample of 175 applications had been misplaced.

Q: Construct a 95% confidence interval for the true proportion of all employees of Handy Glass Pty who…

A: A sample of 135 employees are considered out of which 75 employees are members of the company's…

Q: An online seller of Yema Cake, surveyed several customers. Fifty-two percent (52%) of the customers…

A: Given data: Population proportion = 0.52 Margin of error = 3.98% To calculate: Confidence interval

Q: Identify the t -scores for a 90% confidence interval if the sample size is 25?

A: Givensample size(z)=25α=1-0.90=0.10α2=0.05

Q: In a survey of 1007 parents of children ages 8-14, 75% say they are willing to get a second or part…

A: The survey of 1007 parents of children 75% say they are willing to get a second or part time job…

Q: In a random sample on 200 airline passengers, 84 said they would like a window seat. What is the…

A: 1. The point estimate for the proportion of passengers wishing a window seat is, p^=xn=84200=0.42…

Q: ) When 415 junior college students were surveyed, 150 said they have a passport. Construct a 95%…

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Q: A local news outlet reported that 56% of 600 randomly sampled Kansas residents planned to set off…

A: We have given that,  Sample proportion (p̂) = 56% = 0.56 and sample size (n) = 600 Then,  We will…

Q: When 460 junior college students were surveyed, 100 said they have a passport. Construct a 95%…

A: Given that there are 460 junior college students and 100 said they have a passport. That is, n=460…

Q: nternet service: An Internet service provider sampled  538  customers and found that  78  of them…

A: Given: Sample size (n) = 538 78 of them experienced an interruption in high-speed service during the…

Q: If a sample is used to estimate a population proportion p. What is the 80% confidence interval for…

A: Given  If a sample is used to estimate a population proportion p. What is the 80% confidence…

Q: A university dean is interested in determining the proportion of students who receive some sort of…

A: Given data, n=152 x=101 p=x/n =0.664 The 95% CI is Zc=1.96

Q: We surveyed 53 people in an attempt to determine the proportion of Americans who lease a vehicle. 13…

A: The proportion of sample Americans who lease a vehicle is, Thus, the proportion of sample Americans…

Q: National Sporting Goods Association found that 34% of Americans surveyed had gone swimming during…

A: Given data,           P=34%=0.34           n=1200      Z- value at 95% confidence is ZC=1.96

Q: Construct a 95% confidence interval for the difference between population proportion of voters in…

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Q: n a survey of 2480 golfers, 372 said they were left-handed. Construct a 92% confidence interval for…

A: The given data is appropriate for single proportion confidence interval . because it is a large…

Q: A university dean is interested in determining the proportion of students who receive some sort of…

A:

Q: In a sample of 300 people, 154 said that they watched news on television. Find the 90% confidence…

A: According to the given information in this question We need to find the 90% confidence interval of…

Q: An opinion poll asks an SRS of 100 college seniors how they view their job prospects. In all, 54 say…

A: The random variable X follows normal distribution. We have to construct 95% confidence interval for…

Q: A university dean is interested in determining the proportion of students who receive some sort of…

A:

Q: In September 2011, Gallup surveyed 1,004 American adults and asked them whether they blamed Barack…

A: It is given that sample size (n) is 1004 and p-hat value is 0.53.

Q: 1. The Hartford Insurance Company wants to estimate the percentage of drivers who change tapes or…

A: Please see the attachment..

Q: A poll reported 37% support for a statewide election with a margin of error of 4.18 percentage…

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Q: Of 380 randomly selected medical students, 210 said that they planned to work in a rural community.…

A: Solution: Let X be the number of medical students said that they planned to work in a rural…

Q: search for the Ford Motor Company, you find that a random sample of 800 households includes 721 in…

A: At 98% confidence level, the z value is 2.33 which can be obtained by using the standard normal…

Q: If is a sample that is used to estimate a population proportion p. What is the 99% confidence…

A: Given  Sample size n=112 and proportion of success p= 0.598

Q: In a survey of 1200 adults, 562 said that they plan to watch the next Olympics on television. Using…

A: Givenx=562n=1200p^=xn=5621200=0.4683confidence interval = 95%

Q: An internet service provider sampled 1000 of its customers, 189 of them experienced an interruption…

A: It is given that sample size (n) is 1000 and x is 189.

Q: In simple random sample of 150 of workers, 22 said their workplace environment is toxic. Construct a…

A: We have to find out given confidence interval..

Q: If a sample is used to estimate a population proportion p. What is the 99% confidence interval for a…

A: Given data, n=138 x=62 sample proportion p=x/n =0.449 z-value at 99% confidence is zc=2.576

Q: Elly and Drew work together to collect data to estimate the percentage of their classmates who own a…

A: Given that Elly and Drew work together to collect the data to estimate the percentage of their…

Q: To find the proportion of San Diegans subscribed to Disney+ in 2019, a researcher randomly selected…

A: Given that, n=200 p^=101200=0.505

Q: A genetic experiment with peas resulted in one sample of offspring that consisted of 425 green peas…

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Q: Calculate a two-sided 95% confidence interval for the population mean. b) In addition, predict the…

A: Given: The sample values given is as follows 24 28 27.75 27 24.25 23.5 26.25 24…

Q: An online seller of Yema Cake, surveyed several customers. Fifty-two percent (52%) of the customers…

A:

Q: From a sample of 2412 Jawas, 1013 said they had recently sold a stolen droid to a moisture farmer.…

A: We want to find the 99%CI for population proportion (p) Given  X=1013, n=2412 ɑ=0.01

Q: A university dean is interested in determining the proportion of students who receive some sort of…

A:

Q: An internet service provider sampled 540 customers and found that 55 of them experienced an…

A:

Q: Out of a sample of 1,450 people, 1,000 said they prefer to drive themselves to work rather than…

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Q: A federal report indicated that 29 out of 57 children ages 2 to 5 years had a good diet—an increase…

A: Given data, n=57 x=29 The sample proportion is calculated as follows:  p=xn   =2957   =0.5088 The…

Q: In a survey of 2480 golfers, 372 said they were left-handed. Construct a 92% confidence interval for…

A: GIVEN DATA : Total number of golfers are 2480, Number of left handed golfer are 372        TO FIND :…

Q: Assume a nationwide random survey of 800 adults asked about attitudes toward “alternative medicine”…

A: We have given that,  Sample size (n) = 800 and Favorable cases (X) =448 Then,  We will find the 99%…

Q: In a study of the relationship between alcohol use and bicycling fatalities, the researcher…

A:

Q: A survey of 360 college seniors found that 305 wish they had spent more time studying. Find a 94%…

A: Givensample size(n)=360x=305p^=xn=305360=0.8472confidence interval = 94%

Q: university dean is interested in determining the proportion of students who receive some sort of…

A:

Q: A random sample of 180 men indicated that 50 were smokers, and a random sample of 150 women surveyed…

A: Given; p1=50180=0.28p2=39150=0.26Level of significance=0.02 Confidence interval is given by-…

Q: A 95% confidence interval for the mean weight of bags of potato chips packed by a machine was found…

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Q: 2) Suppose a college is planning to hold an event for students. In the survey of 130 on-campus…

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Q: An insurance company checks police records on 570 accidents selected at random and notes that…

A: The 95% confidence interval for the percentage of all auto accidents that involve teenage drivers is…

Q: A random sample of 25 statistics students was asked: “Have you smoked a cigarette in the past week?"…

A: Given that  Random sample size(n) = 25 Students reported smoking within the past week (X) =6…

Q: In a clinical trial among 4441 patients treated with a drug; 5% developed a nausea reaction.…

A: