document.write( "Question 510579: the mean and standard deviation in a population are 4 and 0.2 resp.in a random sample of 400,how many are expected to have lengths greater than 4.4? \n" ); document.write( "
Algebra.Com's Answer #341838 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! The mean and standard deviation in a population are 4 and 0.2 resp. \n" ); document.write( "in a random sample of 400, how many are expected to have lengths greater than 4.4? \n" ); document.write( "--- \n" ); document.write( "z(4.4) = (4.4-4)/0.2 = 0.4/0.2 = 2 \n" ); document.write( "--------------- \n" ); document.write( "P(x > 4.4) = P(z > 2) = 0.0228 \n" ); document.write( "---- \n" ); document.write( "# of 400 that have length greater than 4.4 : 0.0228*400 = 9.1 \n" ); document.write( "============= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "============= \n" ); document.write( " \n" ); document.write( " |