Finally 010 1107 984 763 5 1895 1107 13april2011

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Unformatted text preview: 4 76,3/5 1035,9/7 2 / ,/ 1,895 ,/ 1 , 1 1,895. Finally, , 0,10 110,7 98,4 76,3 5 1,895 110,7 13 April 2011 1035,9 7 98,4 76,3 5 1,895 11,90 36,52 1035,9 7 0,90 0,90. Then, 11,90, 36,52 is a 90% confidence interval for . Observe that, the interval includes value 0, which indicates that the population means of the two samples can be same. Question 3) As we know the test statistic for / is /σ ~ /σ / A 90% confidence interval for / can be calculated as , /σ /σ 4, 6 σ σ 76,3/1035,9 4,53 0,0162 / / 4, 6 , / / . , / σ σ 76,3 1035,9 σ σ , , Then, 0,0162, 0,4537 is the 90% confidence interval for / value 1, our assumption that in Question 2 is valid with 3 6,4 6,16 0,4537 4, 6 1 1 0,10 0,90 0,90. . Since the interval does not include 0,10 level of significance....
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This document was uploaded on 02/22/2014.

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