Answered: After a mayor announced his plans to…

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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After a mayor announced his plans to cut budget costs in late 2011, the Forum Research polled 1,084 people to measure the mayor's popularity. Everyone polled expressed either approval or disapproval. These are the results their poll produced. • In early 2011, 65 percent of the population approved of the mayor's actions in office. • In mid-2011, 55 percent of the population approved of his actions. • In late 2011, the percentage of popular approval was measured at 37 percent. (a) What is the sample size for this study? (Enter your answer as a whole number.) (b) What proportion in the poll disapproved of the mayor, according to the results from late 2011? (Enter your answer to two decimal places.) (c) How many people polled responded that they approved of the mayor in late 2011? (Round your answer up to the next whole number.) (d) What is the probability that a person supported the mayor, based on the data collected in mid-2011? (Enter your answer to two decimal places.) (e) What is the probability that a person supported the mayor, based on the data collected in early 2011? (Enter your answer to two decimal places.)

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