MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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cant figure out where im going wrong . 

In a recent year, the Better Business Bureau settled 75% of complaints they received. (Source: USA Today, March 2, 2009) You have been hired by the Bureau to investigate complaints this year involving computer stores. You plan to select a random sample of complaints to estimate the proportion of complaints the Bureau is able to settle. Assume the population proportion of complaints settled for the computer stores is 0.75, as mentioned above. Suppose your sample size is 108. What is the probability that the sample proportion will be within 9 percent of the population proportion?

Note: You should carefully round any z-values you calculate to 4 decimal places to match wamap's approach and calculations.

Answer = ________ (Enter your answer as a number accurate to 4 decimal places.)
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Transcribed Image Text:In a recent year, the Better Business Bureau settled 75% of complaints they received. (Source: USA Today, March 2, 2009) You have been hired by the Bureau to investigate complaints this year involving computer stores. You plan to select a random sample of complaints to estimate the proportion of complaints the Bureau is able to settle. Assume the population proportion of complaints settled for the computer stores is 0.75, as mentioned above. Suppose your sample size is 108. What is the probability that the sample proportion will be within 9 percent of the population proportion? Note: You should carefully round any z-values you calculate to 4 decimal places to match wamap's approach and calculations. Answer = ________ (Enter your answer as a number accurate to 4 decimal places.)
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