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# Independent samples of 400 observations

• From Mathematics, Statistics
• Due on 23 Apr, 2018 12:00:00
• Asked On 20 Apr, 2018 09:26:30
• Due date has already passed, but you can still post solutions.
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Independent samples of 400 observations are selected from two populations.

Sample 1 Sample 2

mean= 5275 mean= 5240

standard deviation= 150 standard deviation= 200

a) Use a 90% confidence interval to estimate (µ12)

b) Test the null hypothesis µ12= 25 against the alternative hypothesis µ12 25 at the significance level a= .05

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## [Solved] Indepedent samples

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• Submitted On 20 Apr, 2018 10:54:18
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## [Solved] Independent samples of 400 observations

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• Submitted On 20 Apr, 2018 07:41:29
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