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Home Q & A Board Science-Related Homework Help Mathematics Statistics and Probability
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miks miks
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4 years ago
A random sample of 80 observations produced a mean = 35.4 and a standard deviation s = 3.1.  
 
a. Find a 90% confidence interval for the population mean μ.
b. Find a 95% confidence interval for μ.
c. Find a 99% confidence interval for μ.
d. What happens to the width of a confidence interval as the value of the confidence coefficient is increased while the sample size is held fixed?
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Statistics

Statistics


Edition: 12th
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KaajalpKaajalp
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4 years ago
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miks Author
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4 years ago
Thank you, thank you, thank you!
lubennick
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Yesterday
Good timing, thanks!
vernonb
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2 hours ago
Smart ... Thanks!
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