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Find a 99 Percent Confidence Interval for the Difference Between σ\sigma

Question 112

Multiple Choice

Find a 99 percent confidence interval for the difference between means n1 = 49,n2 = 49, Find a 99 percent confidence interval for the difference between means n<sub>1</sub> = 49,n<sub>2</sub> = 49, <sub>1</sub> = 87, <sub>2</sub> = 92, \sigma <sub>1</sub><sup>2</sup> = 13 and \sigma <sub>2</sub><sup>2</sup> = 15. A) (-12.30 2.30) B) (-6.47 -3.53) C) (-6.94 -3.05) D) (-5.57 -4.43) 1 = 87, Find a 99 percent confidence interval for the difference between means n<sub>1</sub> = 49,n<sub>2</sub> = 49, <sub>1</sub> = 87, <sub>2</sub> = 92, \sigma <sub>1</sub><sup>2</sup> = 13 and \sigma <sub>2</sub><sup>2</sup> = 15. A) (-12.30 2.30) B) (-6.47 -3.53) C) (-6.94 -3.05) D) (-5.57 -4.43) 2 = 92, σ\sigma 12 = 13 and σ\sigma 22 = 15.


A) (-12.30 2.30)
B) (-6.47 -3.53)
C) (-6.94 -3.05)
D) (-5.57 -4.43)

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