document.write( "Question 854123: A soft drink machine is regulated so that it discharges an average of 8 ounces per cup. If the amount of drink per cup is normally distributed with a standard deviation of 0.5 ounce, find the probability a cup contains:
\n" ); document.write( "7. More than 8 ounces ____________
\n" ); document.write( "8. Between 7.8 and 8.4 ounces ____________\r
\n" ); document.write( "\n" ); document.write( "the formulas I seem to be using are not correct in Excel! Please help thank you \n" ); document.write( "
Algebra.Com's Answer #514442 by stanbon(75887)\"\" \"About 
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A soft drink machine is regulated so that it discharges an average of 8 ounces per cup. If the amount of drink per cup is normally distributed with a standard deviation of 0.5 ounce, find the probability a cup contains:
\n" ); document.write( "7. More than 8 ounces = 0.5
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\n" ); document.write( "8. Between 7.8 and 8.4 ounces
\n" ); document.write( "z(7.8) = (7.8-8)/0.5 = -0.2/0.5 = -0.4
\n" ); document.write( "z(8.4) = (8.4-8)/0.5 = 0.4/0.5 = 0.8
\n" ); document.write( "---
\n" ); document.write( "P(7.8 < x < 8.4) = P(-0.4< z <0.8) = normalcdf(-0.4,0.8) = 0.4436
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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