Maurice Tutor

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    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 09 Oct 2017 My Price 5.00

Playbill magazine

Playbill magazine reported that the mean annual household income of its readers is 5119.155 (Playbill. January 2006). Assume this estimate of the mean annual household income is based on a sample of 80 households. and based on past studies, the population standard deviation is known to be σ = 530.000.

a. Develop a 90% confidence interval estimate of the population mean.

b. Develop a 95% confidence interval estimate of the population mean.

c. Develop a 99% confidence interval estimate of the population mean.

d. Discuss what happens to the width of the confidence interval as the confidence as the confidence level is increased. Does this seem reasonable? Explain.

Answers

Maurice Tutor
(5)
Status NEW Posted 09 Oct 2017 12:10 PM My Price 5.00

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