SOLUTION: A NORMAL POPULATION HAS STANDARD DEVIATION OF 10. A RANDOM SAMPLE OF SIZE 25 HAS A MEAN OF 50. CONSTRUCT A 95% CONFIDENCE INTERVAL ESTMATE OF THE POPULATION MEAN.
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Question 1085211: A NORMAL POPULATION HAS STANDARD DEVIATION OF 10. A RANDOM SAMPLE OF SIZE 25 HAS A MEAN OF 50. CONSTRUCT A 95% CONFIDENCE INTERVAL ESTMATE OF THE POPULATION MEAN. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! A NORMAL POPULATION HAS STANDARD DEVIATION OF 10. A RANDOM SAMPLE OF SIZE 25 HAS A MEAN OF 50. CONSTRUCT A 95% CONFIDENCE INTERVAL ESTMATE OF THE POPULATION MEAN.
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Sample Mean:: 50
Margin of Error = 1.96*10/sqrt(25) = 3.92
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95% CI:: 50-3.92 < u < 50+3.92
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Cheers,
Stan H.
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