Each bound should be rounded to three decimal places.
A random sample of ?=100 observations produced...
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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: Â
Upper-bound:
(b) Find a 90% confidence interval for ?μ Lower-bound: Â
Upper-bound:
(c) Find a 99% confidence interval for ?μ Lower-bound: Â
Upper-bound:
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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
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