An economist reports that 560 out of a sample of 1,200 middle-income American households actively participate in
Question:
a. Construct the 90% confidence interval for the proportion of middle-income Americans who actively participate in the stock market.
b. Can we conclude that the proportion of middle-income Americans who actively participate in the stock market is not 50%?
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n1200 p 56012000467 a The population parameter of interest is the proportion of ...View the full answer
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Related Book For 
Essentials Of Business Statistics Communicating With Numbers
ISBN: 9780078020544
1st Edition
Authors: Sanjiv Jaggia, Alison Kelly
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