document.write( "Question 800815: Using the simple random sample of weights of women from a data set, we obtain these sample statistics: n=45 and x-bar =141.71 lbs. Research from other sources suggest that the population of weights of women has a standard deviation given by o=32.44 lbs.
\n" ); document.write( "a) Find the best point estimate of the mean weight of all women.
\n" ); document.write( "b) Find a 90% confidence interval estimate of the mean weight of all women
\n" ); document.write( "a) The best point estimate is ______.
\n" ); document.write( "b) The 90% confidence interval estimate is ____lbs< mu <_____lbs. \n" ); document.write( "
Algebra.Com's Answer #483272 by stanbon(75887)\"\" \"About 
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Using the simple random sample of weights of women from a data set, we obtain these sample statistics: n=45 and x-bar =141.71 lbs. Research from other sources suggest that the population of weights of women has a standard deviation given by o=32.44 lbs.
\n" ); document.write( "a) Find the best point estimate of the mean weight of all women.
\n" ); document.write( "Ans: x-bar = 141.75
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\n" ); document.write( "b) Find a 90% confidence interval estimate of the mean weight of all women
\n" ); document.write( "E = 1.654*32.44/sqrt(45) = 8
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\n" ); document.write( "90% CI: 141.71-8 < mu < 141.71+8
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\n" ); document.write( "\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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