Essay
Several years ago the proportion of Americans aged 18 - 24 who invested in the stock market was 0.20. A random sample of 25 Americans in this age group was recently taken. They were asked whether or not they invested in the stock market. The results follow: 
At a .05 level of significance, use Excel to determine whether or not the proportion of Americans 18 - 24 years old that invest in the stock market has changed.
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Correct Answer:
Verified
Do not reject H0,...
View Answer
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