kFolesc1In a sample of 250 college seniors, 205 responded positively when asked if they have spring fever. Based upon this, compute a 95% confidence interval for theproportion of all college seniors who have spring fever. Then find the lower limit and upper limit of the 95% confidence interval.Carry your intermediate computations to at least three decimal places. Round your answers to two decimal places. (If necessary, consult a list of formulas.):9..QАoptionLower limit:Upper limit:1#THAGAHE3a2SABDZW20F3X2XCHcommand4QF4TERIсUndo%F5VTG

Given,n=250x=205α=1-0.95=0.05α2=0.025Z0.025=1.96 (from Z-table)sample…

Answered: In a sample of 250 college seniors, 205…

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 228 permanent dwellings in the Fort Defiance region showed that 54were traditional Navajo hogans. In the Indian Wells region, a random sample of 143 permanent dwellings showed that 18 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 90% 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 only positive numbers, we can say that there is a higher proportion of hogans in the…
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a researcher was interested in comparing the amount of time watching television by women and by men. Independent simple random samples of 14 women and 17 men were selected, and each person was asked how many hours he or she had watched television during the previous week. the summary statistics are as follows. Women x1=12.7 hours s1=3.9 hours n1=14 hours Men x2=14.1 hours s2=5.2 hours n2=17 hours Construct a 99% confidence interval for u1-u2, the difference between the mean amount of time watching television for women and the mean amount of time spent watching television for men
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