document.write( "Question 164444: This question is from the book Statistics for Business and Economics. Please help me finish the problems. I can't figure it.
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document.write( "Business week conducted a survey of graduates from 30 top MBA programs. On the basis of the survey assume that the mean annual salary for male and female graduates 10 years after graduation is $168,000 and $117,000, respectively. Assume that standard deviation for the male graduates is $40,000, and for the female graduates it is $25,000.\r
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document.write( "What is the probability that a simple random sample of 100 male graduates will provide a sample mean more than $4000 below the population mean?\r
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document.write( "(P(X<164,000) males
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document.write( "n=100
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document.write( "U=168,000
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document.write( "O=40,000\r
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document.write( "Z=164,000-168,000 over 40,000 over square root of 100. (I can't figure what to do next) \n" );
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Algebra.Com's Answer #121435 by themathprof(21)![]() ![]() ![]() You can put this solution on YOUR website! I answered this question yesterday! Here it is again.\r \n" ); document.write( "\n" ); document.write( "It looks like your z=-1.00 \n" ); document.write( "You're looking for 'more than' or to the right of z=-1.00 \n" ); document.write( "The probability of z=-1 to z=0 is .3413 \n" ); document.write( "The prob of z=0 to the right is .5000 \n" ); document.write( "Added together you get .8413 \n" ); document.write( "===================================== \n" ); document.write( "Find more worked out step by step \n" ); document.write( "problems like this in my FREE math911 \n" ); document.write( "tutorial software. Chapter 12 is \n" ); document.write( "devoted entirely to Statistics. \n" ); document.write( "Download, install, activate Free from \n" ); document.write( "www.math911.com \n" ); document.write( "Tell you classmates, friends (and teacher!) \n" ); document.write( "Prof Martin Weissman \n" ); document.write( "mathprof@hotmail.com \n" ); document.write( " |