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Unformatted text preview: than the critical value (6.36). Also you could interpret using the p value. The p-value (0.0010) is also less than the significance level (0.01). The mean production rates are different. b. Develop a 99 percent confidence interval for the difference in the means between Line B and Line C. t for a 99 percent confidence interval and 15 degrees of freedom is 2.947-± + = .-. ± . . + X1 X2 tMSE1n1 1n2 43 33333 41 5 2 9470 54444416 16 = . ± . 1 83333 1 25544 The confidence intervals is 0.57789 to 3.08877 and since both values are positive, this means that there is a difference between the two means. Remember if there is a 0 contained in the confidence interval, then it means there is no conclusion can be drawn between the two means....
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- Spring '10
- Statistics, Statistical hypothesis testing, percent confidence interval, mean production, Jamie Gossett