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  3. you may need to use the appropriate appendix table

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

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Question

Statistics

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

A simple random sample of 50 items from a population with

σ = 8

resulted in a sample mean of 38. (Round your answers to twodecimal 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

Answer & Explanation Solved by verified expert
3.8 Ratings (597 Votes)
Solution Given thataSample size n 50Z2 1645Margin of error E Z2n 1645 8 50Margin of error E 186At 90 confidence interval estimate of    See Answer
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