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  3. each bound should be rounded to three decimal plac

Each bound should be rounded to three decimal places. A random sample of ?=100 observations produced...

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Statistics

Each bound should be rounded to three decimal places.

A random sample of ?=100 observations produced a mean of ?⎯⎯⎯=32with a standard deviation of ?=4

(a) Find a 95% confidence interval for ?μ
Lower-bound:  

Upper-bound:

(b) Find a 90% confidence interval for ?μ
Lower-bound:  

Upper-bound:

(c) Find a 99% confidence interval for ?μ
Lower-bound:  

Upper-bound:

Answer & Explanation Solved by verified expert
3.6 Ratings (392 Votes)
Solution Given thatPoint estimate sample mean 32sample standard deviation s 4sample size n 100Degrees of freedom df n 1 100 1 99a At 95 confidence level 1 95 1 095    See Answer
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