In: Math
You may need to use the appropriate appendix table or technology to answer this question.
A simple random sample of 60 items from a population with σ = 6 resulted in a sample mean of 38. (Round your answers to two decimal places.)
(a)
Provide a 90% confidence interval for the population mean.
______ to ________
(b)
Provide a 95% confidence interval for the population mean.
_________ to ________
(c)
Provide a 99% confidence interval for the population mean.
_______ to _______
Solution :-
a)
At 90 % CI for Population Mean is ( 36.73 , 39.27 )
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b )
At 95 % CI for Population Mean is ( 36.48 , 39.52 )
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c)
At 99 % CI for Population Mean is ( 36.00 , 40.00)