Use the given information to find the number ofdegrees of freedom, the critical values chi SubscriptUpper L Superscript 2 and chi Subscript Upper RSuperscript 2, and the confidence interval estimate ofsigma. It is reasonable to assume that a simple randomsample has been selected from a population with anormal distribution. Nicotine in menthol cigarettes90% confidence; nequals28, sequals0.29 mg.LOADING... Click the icon to view the table of Chi -Square critical values. Question content area bottomPart 1 dfequals 27 (Type a whole number.) Part 2 chiSubscript Upper L Superscript 2equals18.114 (Round to three decimal places as needed.) Part 3 chiSubscript Upper R Superscript 2equals36.741 (Round to three decimal places as needed.) Part 4 Theconfidence interval estimate of sigma isenter yourresponse here mgless thansigmaless thanenter yourresponse here mg. (Round to two decimal places asneeded.)

Let be the population standard deviation.Given that,Confidence level Sample standard deviation

Answered: Round to three decimal places as…

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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On the Navajo Reservation, a random sample of 230 permanent dwellings in the Fort Defiance region showed that 68 were traditional Navajo hogans. In the Indian Wells region, a random sample of 139 permanent dwellings showed that 21 were traditional hogans. Let p1 be the population proportion of all traditional hogans in the Fort Defiance region, and let p2 be the population proportion of all traditional hogans in the Indian Wells region. (a) Find a 95% confidence interval for p1 − p2. (Round your answer to three decimal places.) lower limit upper limit
On the Navajo Reservation, a random sample of 230 permanent dwellings in the Fort Defiance region showed that 68 were traditional Navajo hogans. In the Indian Wells region, a random sample of 139 permanent dwellings showed that 21 were traditional hogans. Let p1 be the population proportion of all traditional hogans in the Fort Defiance region, and let p2 be the population proportion of all traditional hogans in the Indian Wells region. (a) Find a 95% confidence interval for p1 − p2. (Round your answer to three decimal places.) lower limit upper limit (b) Examine the confidence interval and comment on its meaning. Does it include numbers that are all positive? all negative? mixed? What if it is hypothesized that Navajo who follow the traditional culture of their people tend to occupy hogans? Comment on the confidence interval for p1 − p2 in this context. Because the interval contains both positive and negative numbers, we can not say that there is a higher proportion…
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Round to three decimal places as needed.) Part 4 The confidence interval estimate of sigma is response here mgless thansigmaless than enter your enter your response here mg. (Round to two decimal places as needed.)