Srs Chain
Srs Chain
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E*Thirteen SRS Chain Guide ISCG 05 E*13 $100.00 |
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2011 E-13 / The Hive SRS+ Chain Guide, ISCG Tab, Black $119.99 |
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2011 E-13 / The Hive SRS+ Chain Guide, ISCG Tab, White $119.99 |
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e.13 by The Hive SRS Alloy 32-36t Chain Guide, ISCG 05, Black $134.91 |
Statistics of the confidence interval?
A study of the careers of hotel general managers sent questionnaires to a SRS of 160 hotels belonging to major U.S. hotel chains. There were 109 responses. The average of these 109 CEOs had spent with their current company was 10.8 years. Give a confidence interval of 99% for the average number of years general managers of major chain hotels have gone through your current company. (Take as you know that the standard deviation of time with the company to all general managers is 2.5 years.)
Standard error of the mean = s / n ² = 109 = rt rt 2.5/sq 2.5/10.44 = 0.24 critical value 99% confidence interval = 2.58 99% confidence interval is average + / - Critical value * standard error of 10.8 + / - 2.58 * 0.24 10.8 + / - 0.62 lower limit is 10.8-0.62 = 10.18 The upper limit is 10.8 + 0.62 = 11.42