The Universal Music Group is the music industry leader worldwide in sales according to the company Web
Question:
a. Based on these data, construct a 99% confidence interval to estimate the proportion of the CD sales market in St. Louis that is held by the Universal Music Group.
b. Suppose that the survey had been taken with 10,000 people. Recompute the confidence interval and compare your results with the first confidence interval.
How did they differ? What might you conclude from this about sample size and confidence intervals?
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a n 1003 255 99 CI z 005 2575 255 2575 255 035 220 p 290 b n 10000 255 99 CI z 00...View the full answer
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Related Book For 
Business Statistics for Contemporary Decision Making
ISBN: 978-0470910184
6th Edition
Authors: Ken Black
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