document.write( "Question 1174740: Please help me solve this, thank you!\r
\n" ); document.write( "\n" ); document.write( "A random sample of 20 cans of milk showed an average weight of
\n" ); document.write( "198.5 grams with a standard deviation of 15 grams. Is this in line with
\n" ); document.write( "the manufacturer’s claim of an average weight of 200 grams, using a
\n" ); document.write( "0.05 level of significance?
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Algebra.Com's Answer #800208 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "Hi\r\n" );
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document.write( "Sample:  n = 20 , mean = 198.5,  sd = 15\r\n" );
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document.write( "Ho: u =  200 (claim)\r\n" );
document.write( "Ha: u < 200\r\n" );
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document.write( " t(198.5) = (198.5 -200)/[15/sqrt(20)] = -.4472\r\n" );
document.write( " p=value = P( t< -.4472 when df = 19) = .33\r\n" );
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document.write( "Since the p-value is greater than 5%, fail to reject Ho.\r\n" );
document.write( "Conclusion: The claim is reasonable at the 5% confidence level.\r\n" );
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document.write( "Wish You the Best in your Studies.\r\n" );
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