A research firm needs to estimate within 3% the proportion of junior executives leaving large manufacturing companies within three years. A95% level of confidence is to be used. Several years ago, a study revealed that 21 % of junior executives left their company within three years.To update this study, how many junior executives should be surveyed?Multiple Choice594612709897NextMCGrawHillEducation3 of 10( Prev414 AM11/17/201pe here to search#BER

It is given that margin of error (E) is 0.03, p hat is 0.21 and the confidence level is 0.95.

Answered: A research firm needs to estimate…

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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The Ministry of Health in the Canadian province of Ontario wants to know whether the national health care system is achieving its goals in the province. Much information about health care comes from patient records, but that source does not allow to compare people who use health services with those who do not. So the Ministry of Health conducted the Ontario Health Survey, which interviewed a random sample of 6123961239 people who live in the province of Ontario. Estimate the margin of error for conclusions having 95%95% confidence about the entire adult population of Ontario. Give your answer to three decimal places.
A random sample of n1 = 291 voters registered in the state of California showed that 150 voted in the last general election. A random sample of n2 = 215 registered voters in the state of Colorado showed that 128 voted in the most recent general election. Do these data indicate that the population proportion of voter turnout in Colorado is higher than that in California? Use a 5% level of significance.
The sales rep of a waterbed claims that 25% of the Filipino died because of cardiovascular diseases. A researcher wants to test this claim. A hospital record shows that out of a random sample of 200 dead patients, 55 patients died because of cardiovascular diseases. Does the data provide sufficient evidence to support the claim of the sales rep? Use 0.03 level of significance.
A travel agent claims that overseas Filipinos comprise less than one out of ten tourists in the country. To verify the claim, a random sample of 600 tourists who have visited the beaches of Boracay was selected. Interviews conducted showed that 30 of them were overseas Filipinos. Does the data support the travel agent’s claim that overseas Filipinos comprise less than one out of ten tourists? Use a 5% level of significance.
The president of a large free-standing laboratory claims that 80 percent of his 5,000 customers are satisfied with the service they receive. To test this claim, a MT research group surveyed 100 customers, using simple random sampling. Among the sampled customers, 73 percent say they are satisfied. Based on these findings, can we reject the president's hypothesis that 80% of the customers are very satisfied? Use a 0.05 level of significance.
A researcher took a random sample of 200 new mothers in the United States (Group 1) and found that 16% of them experienced some form of postpartum depression. Another random sample of 200 new mothers in France (Group 2), where mothers receive 16 weeks of paid maternity leave, found that 11% experienced some form of postpartum depression. Can it be concluded that the percent of women in the United States experience more postpartum depression than the percent of women in France? Use α=0.05. Select the correct alternative hypothesis and decision
According to theElgin Community College website, approximately 56% of ECC students are female. Suppose we wonder if the same proportion is true for math courses. If we collect a sample of 200 ECC students enrolled in math courses and find that 105 of them are female, do we have enough evidence at the 10% level of significance to say that the proportion ofmath students who are female is different from the general population?Use the p-value method.
The Genetics and IVF Institute conducted a clinical trial of the YSORT method designed to increase the probability of conceiving a boy. As of this writing, 291 babies were born to parents using the YSORT method and 239 of them were boys. a) What is the best point estimate of the population proportion of boys born to parents using the YSORT method? b) Use the sample data to construct a 99% confidence interval estimate of the proportion of boys born to parents using the YSORT method. c) Based on the results, does the YSORT method appear to be effective? Why or why not?
A Malaysian Airline wanted to determine if customers would be interested in paying a $10 flat fee for unlimited Internet access during long-haul flights. From a random sample of 200 customers, 125 indicated that they would be willing to pay this fee. Using this survey data, determine the 99% confidence interval estimate for the population proportion of the airline’s customers who would be prepared to pay this fee for Internet use.
A political candidate has asked you to conduct a poll to determine what percentage of people support her.If the candidate only wants a 6% margin of error at a 95% confidence level, what size of sample is needed?Give your answer in whole people. Submit QuestionQuestion 18
The CEO of a large electric utility claims that 80 percent of his 1,000,000 customers are very satisfied with the service they receive. To test this claim, the local newspaper surveyed 100 customers, using simple random sampling. Among the sampled customers, 73 percent say they are very satisfied. Based on these findings, can we reject the CEO's hypothesis that 80% of the customers are very satisfied? Use a 0.05 level of significance.
An article claimed that "those with a college degree reported a higher incidence of sunburn than those without a high school degree—45 percent versus 26 percent." For purposes of this exercise, suppose that these percentages were based on random samples of size 200 from each of the two groups of interest (college graduates and those without a high school degree). Is there convincing evidence that the proportion who experience a sunburn is higher for college graduates than it is for those without a high school degree? (Use pcollege graduates − pwithout a high school degree. Round your test statistic to two decimal places and your P-value to four decimal places.) z = P =

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