Question

In: Math

You may need to use the appropriate appendix table or technology to answer this question. A...

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 _______

Solutions

Expert Solution

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)


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