document.write( "Question 1128112: An auditor takes a random sample of size n = 36 from a population of 1,000 accounts receivable. The mean value of the accounts receivable for the population is N260:00, with the population standard deviation N45:00. What is the probability that the sample mean will be less than N250.00? \n" ); document.write( "
Algebra.Com's Answer #744596 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! An auditor takes a random sample of size n = 36 from a population of 1,000 accounts receivable. The mean value of the accounts receivable for the population is N260:00, with the population standard deviation N45:00. What is the probability that the sample mean will be less than N250.00? \n" ); document.write( "-------------- \n" ); document.write( "standard deviation of all samples of size 36:: 45/sqrt(36) = 15/2 = 7.5 \n" ); document.write( "----- \n" ); document.write( "z(250) = (250-260)/7.5 = -1.333 \n" ); document.write( "P(x-bar < 250) = P(z < -1.333) = normalcdf(-100,-1.333) = 0.091 \n" ); document.write( "---- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "--------- \n" ); document.write( " |