Te photo of problem is below In A Sample Of 5000 Car Owners, 1826 SaidThat They Would Seriously considerpurchasing an electric-powered vehicle.a.) What is the point estimate for theproportion of all car owners who wouldseriously consider purchasing an electric-powered vehicle?b.) Determine the 95% Confidence Intervalfor the proportion of all car owners whowould seriously consider purchasing anelectric-powered vehicle?c.) Express your answer from b) in terms ofpercentages. Fill in the blanks:With 95% confidence based on this sample,between __-% and% of car--- ---- --owners would seriously consider purchasingan electric-powered vehicle

Given that, x = 1826, n =5000 (a) The point estimate of the population proportion of car owners…

Answered: In A Sample Of 5000 Car Owners, 1826…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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1. A recent survey showed that from a sample of 500 packages delivered by a Postal Service, 480were delivered on time. a) Construct a 95% confidence interval for the proportion of all packages that are deliveredon time by the Postal Service.
In a survey of 3,540 adults concerning complaints about restaurants, 1,475complained about dirty or ill-equipped bathrooms and 1,217complained about loud or distracting diners at other tables. Complete parts (a) through (c) below. a. Construct a 95%confidence interval estimate of the population proportion of adults who complained about dirty or ill-equipped bathrooms.
A computer software magazine compares the rates of malware infection for computers protected by security software A with the rates of infection for computers protected by security software B.They found that out of 787 computers with security software A, 72 became infected with some type of malware after 1000 hours of internet interaction. For security software B, 37 out of 834 computers became infected after 1000 hours of internet interaction.Assuming these to be random samples of infection rates for the two security software packages, construct a 98% confidence interval for the difference between the proportions of infection for the two types of security software packages. Interpret the results. Does the confidence interval contradict the claim that the proportion of infections is the same for the two types of security software?
To find the proportion of San Diegans subscribed to Disney+ in 2019, a researcher randomly selected 200 people from San Diego and found that 101 were subscribed. a) Check that the assumptions are met for a confidence interval for proportions.
On the basis of the results to part A in the picture, does the manager have a right to complain to the manufacturer? does a 1 gallon paint can containing exactly 1 gallon of paint lie within the 95% confidence interval?
A U.S. Food Survey showed that Americans routinely eat beef in their diet. Suppose that in a study of 49 consumers in Illinois and 64 consumers in Texas the following results were obtained from two samples regarding average yearly beef consumption: Illinois Texas = 49 = 64 = 54.1lb = 60.4lb S1 = 7.0 S2 = 8.0 Develop a 95% confidence Interval Estimate for the difference between the two population means.
In a study by Sallie Mae and Gallup, 323 of the 569respondents said that they paid for their education by taking out student loans. Find a 95% confidence interval for the proportion of students who paid for their education by taking out student loans.
The figure to the right shows the results of a survey in which 1005 adults from Country A, 1023 adults from Country B, 995 adults from Country C, 1020 adults from Country D, and 1012 adults from Country E were asked whether national identity is strongly tied to birthplace. Country A37%22%27%49%Country BCountry CCountry DCountry E10% Construct a 99% confidence interval for the population proportion of adults who say national identity is strongly tied to birthplace for each country listed. The 99% confidence interval for the proportion of adults from Country B who say national identity is strongly tied to birthplace is enter your response here ,enter your response here . (Round to three decimal places as needed.)
The figure to the right shows the results of a survey in which 1005 adults from Country A, 1023 adults from Country B, 995 adults from Country C, 1020 adults from Country D, and 1012 adults from Country E were asked whether national identity is strongly tied to birthplace. Country A37%22%27%49%Country BCountry CCountry DCountry E10% Construct a 99% confidence interval for the population proportion of adults who say national identity is strongly tied to birthplace for each country listed. Question content area bottom Part 1 The 99% confidence interval for the proportion of adults from Country A who say national identity is strongly tied to birthplace is (enter your response here ,enter your response here ). (Round to three decimal places as needed.)
On the Navajo Reservation, a random sample of 228 permanent dwellings in the Fort Defiance region showed that 54were traditional Navajo hogans. In the Indian Wells region, a random sample of 143 permanent dwellings showed that 18 were traditional hogans. Let p1 be the population proportion of all traditional hogans in the Fort Defiance region, and let p2 be the population proportion of all traditional hogans in the Indian Wells region. (a) Find a 90% confidence interval for p1 − p2. (Round your answer to three decimal places.) lower limit upper limit (b) Examine the confidence interval and comment on its meaning. Does it include numbers that are all positive? all negative? mixed? What if it is hypothesized that Navajo who follow the traditional culture of their people tend to occupy hogans? Comment on the confidence interval for p1 − p2 in this context. Because the interval contains only positive numbers, we can say that there is a higher proportion of hogans in the…
In a random sample of 850 consumers. 385 reported that they were able to purchase a Playstation 5. Which of the following is a 98% confidence interval for the population proportion of consumers that were able to purchase a Playstation 5? A) (0.4131, 0.4927) B)(0.4089, 0.4969) C)(0.4248, 0.4810) D) (0.4194, 0.4864)
Suppose that a safety group surveyed 1,100 drivers. Among those surveyed, 65% said that careless or aggressive driving was the biggest threat on the road, and 25% said that cell phone usage by other drivers was the driving behavior that annoyed them the most. Based on these data and assuming that the sample was a simple random sample, construct and interpret a 95% confidence interval estimate for the true proportion in the population of all drivers who are annoyed by cell phone users. The confidence interval estimate is ??––––––??> (Round to three decimal places as needed. Use ascending order.) Interpret the confidence interval estimate. A. There is a 0.95 probability that the population proportion of drivers who are annoyed by cell phone users is in the interval. B. There is 95% confidence that the population proportion of drivers who are annoyed by cell phone users is in the interval. C. There is 95% confidence that the population proportion…

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