document.write( "Question 636970: at a large department store, the average number of years of service was 13.5 with a standard deviation of 6.2 years. If an employee is picked at random, what is the probability that the employee has worked for the company between 10 and 17 years? \n" ); document.write( "
| Algebra.Com's Answer #401490 by stanbon(75887)      You can put this solution on YOUR website! at a large department store, the average number of years of service was 13.5 with a standard deviation of 6.2 years. If an employee is picked at random, what is the probability that the employee has worked for the company between 10 and 17 years? \n" ); document.write( "---- \n" ); document.write( "z(10) = (10-13.5)/6.2 = -0.5645 \n" ); document.write( "--- \n" ); document.write( "z(17) = (17-13.5)/6.2 = 0.5645 \n" ); document.write( "--------- \n" ); document.write( "P(10 < x < 17) = P(-0.5645 < z < 0.5645) = 0.4276 \n" ); document.write( "=========================================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |