We want to find a 90 we are given that

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Unformatted text preview: 98,4 110,7 1035,9 76,3 ~ with unknown and unequal variances. We want to find a 90% We are given that . Since we do not know the population variances, we will make use of confidence interval for distribution. Moreover, we know that the variances are unequal. Then, we calculate the degree of freedom as follows: / / / 76,3/5 76,3/5 /4 The test statistic for / 1 / 1 1035,9/7 1035,9/7 /6 7,187 ~ . 7 . is / / We are given that 0,10. Then, the critical the 90% confidence interval for is ,/ 1,895 , value can be given as / 110,7 / 98,...
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This document was uploaded on 02/22/2014.

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