A past survey of 1,068,000 students taking a standardized test revealed that 7.9% of the students were planning on studying engineering in college. In arecent survey of 1,476,000 students taking the SAT, 9.2% of the students were planning to study engineering. Construct a 90% confidence interval for thedifference between proportions p₁ - P2 by using the following inequality. Assume the samples are random and independent.^P191P292P191 P292(P₁-P₂) - Zc+

Given : n1 = 1068000 n2 = 1476000 confidence level,c=0.9…

Answered: st survey of 1,068,000 students taking…

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 political candidate has asked his/her assistant to conduct a poll to determine the percentage of people in the community that supports him/her. If the candidate wants a 1% margin of error at a 95% confidence level, what size of sample is needed? Be sure to round accordingly.The candidate would need to survey people in the community in order to be within a 1% margin of error at a 95% confidence level.
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Chinovac Labs tried a new vaccine on 189 randomly selected individuals. From the experiment, it was determined that 104 of them developed immunity. Calculate a 95% confidence interval for the proportion p of individuals in the population for whom the vaccine would help. What is the upper bound of this interval? Note: Write your answers in decimal form and round it to 4 decimal places.
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