4. [] The government of Canada is interested in assessing the impact of therecent decline in the Canadian dollar on the economies of the country as well asthe provinces and territories. Specifically, the impact on the manufacturingestablishments. For the sampling design, a sample of establishments was to bedrawn across the country using a simple random sampling (SRS). As thesampling methodologist (statistician) on the panel, explain to the members of thepanel, why the use of a stratified random sampling may be more appropriate thanthe SRS approach.

As the sampling methodologist on the panel, I would advocate for the use of stratified random…

Answered: 4. [ ] The government of Canada is…

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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In the Star and Tribune newspaper, there is an article entitled “1 in 8 school buses fail tests." The article says that the overall statewide proportion of school buses that fail safety tests is 9%. However, one bus company has a higher rate of over 12%. Assume that we want a new estimate for the statewide proportion of school buses that fail the safety inspection. We take a sample of 200 buses and find that 20 buses fail the safety inspection. If we construct a 95% confidence interval estimate for the true proportion of all Minnesota school buses that fail the safety tests, what is the upper limit of the interval? (Enter you answer including 3 decimal positions, e.g. .234)
It is known through Operation Laban Altapresyon that 15% of adults from the Province of Realeza are hypertensive. Princess recently conducted a survey to determine the prevalence of high blood pressure among the towns of the Province of Realeza. Her findings are tabulated below. Table 1. Distribution of Survey Respondents by Town and Blood Pressure Status Blood Pressure Status Towns in Realeza Total Normotensive Hypertensive San Luis 368 46 414 Galindo 348 62 410 Coronacion 355 23 378 Given the provided data, identify if there has been a change in the prevalence of hypertension in the town of San Luis. Which of the following is the most appropriate null hypothesis?
A local bank has three branch offices. The bank has a liberal sick leave policy, and the CEO was concerned with employees taking advantage of this policy. She thought that the tendency to take advantage depended on the branch at which the employee worked. To see if there were differences in the time employees took for sick leave, she asked each branch manager to sample employees randomly and record the number of days of sick leave taken during 2020. Ten employees were chosen, and the data are listed below. Do this data indicate a difference in branches? Use a level of significance of 0.05. Ho: H₂: Branch 1 Branch 2 Branch 3 Source Treatments Error Total Degrees of freedom: Rejection region: Test statistic: Decision: Conclusion: 15 11 18 df 2 7 9 20 15 19 SS 89.8333 50.6667 140.5000 19 11 23 MS 44.9167 7.2381 14 F 6.2056
8. Agri-Beef, Inc. is a large Midwestern farming operation. The company has been a leader in employing statistical techniques in its business. Recently, John Goldberg, operations manager, requested that a random sample of cattle be selected and that these cattle be fed a special diet. The cattle were weighed before the start of the new feeding program and at the end of the feeding program. John wished to estimate the average daily weight gain for cattle on the new feed program. Two hundred Forty cattle were tested, with the following sample results: X = 1.3 pounds gain per day and S= 0.60 pounds gain per day. a. Obtain a 92% confidence interval estimate for the true average daily weight gain. b. Provide a 98% confidence interval estimate for the true average daily weight gain. c. Discuss the difference between the two estimates found in parts a. and b., and indicate the advantages and disadvantages of each. d. John is considering adopting this new diet. However, the weight gain…
An educator wants to determine whether a new curriculum significantly improves standardized test scores for students. She randomly divides 60 students into two groups. Group 1 is taught using the new curriculum, while group 2 is taught using the traditional curriculum. At the end of the school year, both groups are given the standardized test and the mean scores are compared. Determine whether the sampling is dependent or independent. Indicate whether the response variable is qualitative or quantitative Determine whether the sampling is dependent or independent. OA. The sampling is independent because the individuals selected to be in one sample are used to determine the individuals to be in the second sample. B. The sampling is dependent because the individuals selected to be in one sample are used to determine the individuals to be in the second sample. C. This sampling is independent because the individuals selected for one sample do not dictate which individuals are to be in a…
(6) A student surveys some students on campus in the evening and finds that 16 out of 20 of the students she interviewed are part time students. She uses the data to estimate the percentage of all students who are part time. What type of bias is present in her sample?
A study is conducted to assess the attitude of physicians towards drug screening in the workplace. To collect the information, physicians are invited to respond to an email survey that is distributed on a network accessible to all university affiliated physicians in the city. Which of the following best describes this type of sampling technique? A. Convenience B. Population C. Random D. Referral E. Stratified
3. What is the sample mean for the following sample of scores? Scores: 1, 2, 5, 4
It is known through Operation Laban Altapresyon that 15% of adults from the Province of Realeza are hypertensive. Princess recently conducted a survey to determine the prevalence of high blood pressure among the towns of the Province of Realeza. Her findings are tabulated below.
A certain public school has a total of 150,000 enrollees consist of elementary and high school students. The local government wanted to provide school supplies for the students starting from the priority group which is the Grade 1 students composed of 78 students divided into 4 sections. Determine the population and sample size of this scenario.
It is known through Operation Laban Altapresyon that 15% of adults from the Province o Realeza are hypertensive. Princess recently conducted a survey to determine the prevalence of high blood pressure among the towns of the Province of Realeza. Her findings are tabulated below. Table 1. Distribution of Survey Respondents by Town and Blood Pressure Status Blood Pressure Status Towns in Realeza Total Normotensive Hypertensive San Luis 368 46 414 Galindo 348 62 410 Coronacion 355 378 Given the provided data, identify if there has been a change in the prevalence of hypertension in the town of San Luis. SAMSUNG 23
Income Tax and the IRS. In 2010, the Internal Revenue Service (IRS) sampled 308,946 tax returns to obtain estimates of various parameters. Data were published in Statistics of Income, Individual Income Tax Returns. According to that document, the mean income tax per return for the returns sampled was $11,266. a. Explain the meaning of sampling error in this context.b. If, in reality, the population mean income tax per return in 2010 was $11,354, how much sampling error was made in estimating that parameter by the sample mean of $11,266?c. If the IRS had sampled 400,000 returns instead of 308,946, would the sampling error necessarily have been smaller? Explain your answer.d. In future surveys, how can the IRS increase the likelihood of small sampling error?

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