Instruction: Please read and answer the following questions carefully. Write your completesolution.1. A medical researcher is currently working on the possible impact of the pandemic toRizal Technological University (RTU) students' mental health. He wants to know theminimum number of samples he can consider if the total number of RTU students for theAcademic Year 2021-2022 is 3,500 and the margin of error is at 5%.2. The XYZ research firm is interested in studying the financial behavior of returning OFWSin the entire country. They will use 10% margin of error and 60% proportion of success.3. Given that NCR target population of 12,877,253 is already 80% fully vaccinated, theDepartment of Health (DOH) would like to commence their research on the long-timeeffects of the different COVID-19 vaccines to vaccinated individuals. Compute for theminimum sample size given a 99% confidence level.

1) Given, Margin of error (E) = 0.05 Assuming, sample proportion (p^) = 0.5 significance level (α)…

Answered: Instruction: Please read and answer the…

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.1: Measures Of Center

Problem 4GP

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You may need to use the appropriate appendix table or technology to answer this question. In 2014, the Centers for Disease Control reported the percentage of people 18 years of age and older who smoke. Suppose that a study designed to collect new data on smokers and nonsmokers uses a preliminary estimate of the proportion who smoke of 0.30. (a) How large a sample should be taken to estimate the proportion of smokers in the population with a margin of error of 0.02? Use 95% confidence. (Round your answer up to the nearest integer.) (b) Assume that the study uses your sample size recommendation in part (a) and finds 450 smokers. What is the point estimate of the proportion of smokers in the population? (Round your answer to four decimal places.) (c) What is the 95% confidence interval for the proportion of smokers in the population? (Round your answers to four decimal places.) Need Help? esc 1 Q A to Read It UBO 2 W S > Master It X 3 E a D $ 4 C 3 R F % 5 V 11 ♫ T G Concern 6 A Y B & 7 H…
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A retail store is considering adding a new product line to its inventory. The store wants to know whether the new product line will be popular with customers. To determine this, they take a random sample of customers and ask if they would be interested in buying the new product line. Of the 125 people they asked, 70 were interested in this new product line. The manager is interested in creating a 90 % confidence interval regarding the population parameter.

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