document.write( "Question 286706: 1. The manager of a driving school claims that the mean time taken to learn how to drive a car is 8 hours or less for all new drivers. A sample of 16 new drivers showed that the mean time taken by them to learn how to drive the car is 9.5 hours with a standard deviation of 1.5 hours. Test the manager’s claim at the 1% significance level.\r
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document.write( "a. Select the null and alternate hypothesis. \r
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document.write( "b. Determine the critical values of the test statistic.
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document.write( "c. What equation/formula would you use? \r
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document.write( "d. Using the statistical calculator or manual calculation what is the observed statistic and what is your decision regarding the null hypothesis. Provide a one sentence answer.
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Algebra.Com's Answer #207923 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! 1. The manager of a driving school claims that the mean time taken to learn how to drive a car is 8 hours or less for all new drivers. A sample of 16 new drivers showed that the mean time taken by them to learn how to drive the car is 9.5 hours with a standard deviation of 1.5 hours. Test the manager’s claim at the 1% significance level. \n" ); document.write( "a. Select the null and alternate hypothesis. \n" ); document.write( "Ho: u <= 8 hrs \n" ); document.write( "Ha: u >= 8 hrs \n" ); document.write( "------------------------------------ \n" ); document.write( "b. Determine the critical values of the test statistic. \n" ); document.write( "invT(0.99 with df = 15) = 2.6042 \n" ); document.write( "------------------------------------\r \n" ); document.write( "\n" ); document.write( "c. What equation/formula would you use? \n" ); document.write( "t(9.5) = (9.5-8)/[1.5/sqrt(16)] = 4 \n" ); document.write( "--------------------------------------- \n" ); document.write( "d. Using the statistical calculator or manual calculation what is the observed statistic and what is your decision regarding the null hypothesis. Provide a one sentence answer. \n" ); document.write( "Conclusion: Since the test statistic is in the reject interval, \n" ); document.write( "reject Ho. \n" ); document.write( "================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "================== \n" ); document.write( " \n" ); document.write( " |