Solutions Set 8
1
Probability and Statistics Hints/Solutions to Test Set 8 1. 20 i i1 20(X 60) P( X 1300) P(X 65) P( 1.49) P(Z 1.49) 0.0681 15 2. Similar as Q. 1 3. Use t- distribution 4. t n-1 5. U~ t m+n-2 6. Use F distribution 7. Use 2 2 n1 2 (n 1)S ~ to get n. 8. Use Chi-square distribution. 9. Use various properties of sampling distributions.
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probability and statistics: test set 8 solutions
Transcript of Solutions Set 8
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Probability and Statistics Hints/Solutions to Test Set 8
1. 20
ii 1
20(X 60)P( X 1300) P(X 65) P( 1.49) P(Z 1.49) 0.068115
2. Similar as Q. 1 3. Use t- distribution 4. tn-1 5. U~ tm+n-2 6. Use F distribution
7. Use 2
2n 12
(n 1)S ~ to get n.
8. Use Chi-square distribution. 9. Use various properties of sampling distributions.
