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ClassNotes6_2_08

ClassNotes6_2_08 - Ho Drug is safe Ha Drug is Unsafe Ho...

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Ho Drug is safe Ho Drug is Unsafe Ha Drug is Unsafe Ha Drug is Safe Type I Error Type II Error Problem 12.24 page 373 P-distribution because you are having to deal with the standard devation Reject Ho and conclude that the containers are mislabeled. If instead estmating the weight of the packages with 99% confidence Conclude that drug is unsafe when it is actually safe Conclude that drug is safe when it is unsafe Conclude that druge is safe when it really is safe Conclude that the drug is unsafe when it is safe. 18 01 . 0 456 . 1127 45 . 142 2 = = = = n X X i i α ( 29 1 2 2 - - n n x X i i ( 29 914 . 7 18 45 . 142 085 . 0 0072 . 0 17 18 45 . 142 456 . 1127 2 = = = = = - n X X i ject t T Since t t T if Ho ject n S X T Stat Test Ha Ho critcal n Re 567 . 2 29 . 4 567 . 2 Re 29 . 4 18 085 . 0 8 914 . 7 01 . 0 : 8 : 8 : 17 , 01 . 0 1 , - = - < - = - = - = - < - = - = - = = < = - α μ α μ μ
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Chapter 13 Appendix page B-11 for f tables Page 451 13.59 Problem is asking us about two variances n Z X σ α ± 2 ] 972 . 7 , 856 . 7 [ 005 . 0 2 01 . 0 99 . 0 1 18 085 . 0 898 . 2 914 . 7 = = = - = ± α α α 2 2 1 1 81 , 2 , 22 12 1 12 11 2 1 σ μ σ μ X population j number sample i X X X X X X X j i n n = = 00001126 . 0
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