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 1 1,900 30 22.6 5.2 0.3 2 3,000 51 40.5 4.1 0.1 3 3.500 72 28.7 7.4 0.2 4 4,200 65 22.5 3.8 0.3 5 4,100 83 25.4 5.1 0.4 PP 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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