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Home Q & A Board Science-Related Homework Help Mathematics Statistics and Probability
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whigger666 whigger666
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A local school board would like to test the hypothesis that the proportion of Americans who think unions have a positive effect on schools has decreased this year when compared to last year. A random sample of 160 Americans last year found that 48 felt unions have a positive effect on schools. A random sample of 140 Americans this year found that 28 felt unions have a positive effect on schools. Define Population 1 as this year and Population 2 as last year. Construct a 90% confidence interval for the difference in population proportions and interpret the results.
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Business Statistics

Business Statistics


Edition: 2nd
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SupremeDJSupremeDJ
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whigger666 Author
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2 years ago
Correct Slight Smile TY
deathDoUsPart
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Smart ... Thanks!
ealvino1610
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2 hours ago
this is exactly what I needed
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