A survey based on a stratified sample produced the following information: (a) Find a 90 % confidence

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A survey based on a stratified sample produced the following information: image text in transcribed

(a) Find a 90 % confidence interval for the population mean.

(b) Find a 95 % confidence interval for the population proportion.

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Statistics For Business And Financial Economics

ISBN: 9781461458975

3rd Edition

Authors: Cheng Few Lee , John C Lee , Alice C Lee

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Question Posted: Mar 03, 2024 07:01 AM

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A survey based on a stratified sample produced the following information: (a) Find a 90 % confidence

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Stratum N n XX s PP 1 1,000 40 27.6 4.2 .5 2 2,000 50 30.4 7.1 .6 3 2,200 42 18.7 6.4 .3 4 3,200 75 32.5 2.8 .6 where x, s, and pare the sample mean, sample variance, and sample proportion, respectively.

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Statistics For Business And Financial Economics

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