A newspaper provided a "snapshot" illustrating poll results from 1910 professionals who interview job applicants. The illustration showed that 26% of them said the biggest interview turnoff is that the applicant did not make an effort to learn about the job or the company. Themargin of error was given as ±3 percentage points. What important feature of the poll was omitted?Choose the correct answer.O The point estimateO The sample sizeOThe confidence levelThe confidence intervalG

Answered: A newspaper provided a "snapshot"…

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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Use the sample data and confidence level given below to complete parts (a) through (d). A research insitute poll asked respondents if they felt vulnerbale to identity theft. In the poll, n=1047 and x=574 who said "yes." Use 99% confidence level. a. find the best point of the population proportion p. (Round to three decimal places as needed.) b. Identity the value of the margin of error E. E = c. Construct the confidence level interval. ___ < p < ___ d. Write a statement that correctly interprets the confidence interval. Choose to correct Below A. One has 99% confidence that the sample proportion is equal to the population proportion. B. 99% of sample porportions will fall between the lower bound and upper bound. C. One has 99% confidence that the interval from the lower bound to the bound actually does contain the true value of the popuklation porportion. D. There is a 99% chance that the true value of the population proportion will fall between the lower bound and the…
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As a manager you want to know how likely is it that somebody who enters the store will purchase something. You asked one of your employees to check how many of the people who come to the store buy something. During one afternoon out of 280 people who entered the store 70 actually bought something. Find the sample probability of purchase. b. Find 90% confidence interval for the sample probability of purchase. Find 95% confidence interval for the sample probability of purchase. d. Find 99% confidence interval for the sample probability of purchase. e. Which of those confidence intervals is the widest and why? f. a. C. What if the lower bound of the confidence interval in this case would be below 0? Tor
On April 15th, 1912, the R.M.S. Titanic sank into the North Atlantic Ocean, resulting in the loss of more than 1,500 passengers and crew. Below is a table which summarizes the total number of passengers and the number of survivors for the crew, first-, second-, and third-class. Find the proportion of survivors by type of service (crew, first, second, third). Test the hypothesis at the 99% confidence level that the proportion of first-class survivors is the same as third class (.25).What do you calculate for the test-statistic? What is the critical statistic? What is the conclusion of your hypothesis test? Passengers survivedCrew 885 212First 325 202Second 285 118Third 706 178Total 2201 710
A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n=935 and x=561 who said "yes." Use a 95% confidence level.
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An advertising agency wants to estimate the response rate for a new flyer. The agency sent the flyer to 100 randomly selected people and received 12 orders. a. What is the point estimate for the population proportion? b. What is the standard error of the proportion? c. Find 94% confidence interval for the percentage of those people who will place an order.
A political candidate has asked you to conduct a poll to determine what percentage of people support her.If the candidate only wants a 10% margin of error at a 90% confidence level, what is the sample size that is needed?Give your answer as a whole number.
Construct a 95% confidence interval for p1 - p2 for a survey that finds 30% of 240 males and 41% of 200 females are opposed to the death penalty. Group of answer choices a.(-0.200, -0.021) b.(-1.532, 1.342) c.(-1.324, 1.512) d.(-0.561, 0.651)
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Use the sample data and confidence level given below to complete parts (a) through (d). A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n= 1004 and x = 575 who said "yes." Use a 90% confidence level. E Click the icon to view a table of z scores. .... a) Find the best point estimate of the population proportion p. (Round to three decimal places as needed.)
Use the sample data and confidence level given below to complete parts ( a ) through ( d ) . A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n= 1003 and x= 574 who said "yes." Use a 99 % confidence level. A. Find the best point estimate of the population proportion. ( Round to three decimal places as needed. ) B. Identify the value of the margin of error E. (Round to three decimal places as needed) C. Construct a confidence interval.(Round to three decimal places as needed)

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