Construct a 90% confidence interval 9. A survey of 280 homeless persons showed that 63 were veterans. Construct a 90% confidenceinterval for the proportion of homeless persons who are veterans.

In a survey of 280 homeless persons showed that 63 were veterans.

Answered: 9. A survey of 280 homeless persons…

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 a social study, a random sample of 150 teachers were selected and an independent random sampleof 100 nurses were selected. Each person was asked if they currently have a second job. The resultsshowed that 48 of the 150 teachers and 21 of the 100 nurses had a second job. Construct and interpreta 95% confidence interval for the difference in the proportion of all teachers and nurses that have asecond job.
A survey found that out of 234 workers, 158 said they were interrupted three or more times an hour by phone messages, faxes, etc. Find the lower boundary of the 90% confidence interval of the population proportion of workers who are interrupted three or more times an hour.
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9. A survey of 280 homeless persons showed that 63 were veterans. Construct a 90% confidence interval for the proportion of homeless persons who are veterans.