document.write( "Question 928059: Systolic blood pressure are assumed to follow a normal distribution with mean of 108 and standard deviation of 14.
\n" );
document.write( "1. in random sample of 1000 individuals, how many of them whose blood pressure will be more than 120?
\n" );
document.write( "(1)155; (2)195; (3)604; (4)804; (5)904\r
\n" );
document.write( "\n" );
document.write( "2. among a random sample of 100 individuals, what is the lowest blood pressure C so that the blood pressure of 10 individuals will be greater than C?
\n" );
document.write( "(1)110; (2)115; (3)120; (4)125; (5)130 \n" );
document.write( "
Algebra.Com's Answer #563473 by ewatrrr(24785) You can put this solution on YOUR website! Population:mean of 108 and standard deviation of 14. \n" ); document.write( "P( x > 120) = P( z > .8571) = normalcdf(.8571, 100) = .1957 0r 195 people \n" ); document.write( "............ \n" ); document.write( "what is the lowest blood pressure C so that the blood pressure of 10 individuals will be greater than C: \n" ); document.write( "14(invNorm(.90) + 108 = 14(1.28) + 108 = 125 (take low Integer in this case) \n" ); document.write( " \n" ); document.write( " |