6% of all merchandise sold gets returned in an imaginary country, Camaro. Sampled 80items are sold in October, and it is found that 12 of the items were returned at thestore in Maniou province.a) Construct a 95% confidence interval for the proportion of returns at the store inManiou province.b) Is the proportion of returns at the Maniou store significantly different from thereturns for the nation, (Camaro) as a whole? Provide statistical support for your answerusing hypothesis testing.O a) a) The confidence interval is exactly between 0.1718 and 0.2282b) Reject the null hypothesisb) a) The confidence interval is exactly between 0.5718 and 0.6282b) Do not reject the null hypothesisO c) a) The confidence interval is exactly between 0.2718 and 0.3282b) Do not reject the null hypothesisO d) None of the answers are correctO e) a) The confidence interval is exactly between 0.3718 and 0.4282b) Do not reject the null hypothesis

(a) Obtain the 95% confidence interval for the proportion of returns at the store in Maniou…

Answered: 6% of all merchandise sold gets…

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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A random survey of 150 CBC students found that 35 of them intended to transfer to WSU Tri-Cities upon completing their AA degree. Construct a 95% confidence interval for the proportion of CBC students intending to transfer to WSU Tri-Cities. Give your answer as a complete sentence in the context of the problem.
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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The dataset "nurses" is a random sample of 1,000 cases from “Health Care Provider Credential Data” from Washington State Open Data Portal. In the sample, there are 418 CNA's and 278 of the CNA's have expired credentials. Use the statistics from the nurses dataset to answer the following question: "With 90% confidence, what percent of all CNA's on Washington State's healthcare provider list are expired?"

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