【正文】
The camshaft is provided by an external supplier. Assess the process capability for this supplier. The data is available in Process Capability . Example 3 Stat ? Quality Tools ? Capability Analysis (Normal) Example 3 6 0 46 0 36 0 26 0 16 0 05 9 95 9 85 9 75 9 6T a r g e t U S LL S LP r o c e s s C a p a b i l i t y f o r C a m s h a f t L e n g t hP P M T o t a lP P M U S LP P M L S LP P M T o t a lP P M U S LP P M L S LP P M T o t a lP P M U S LP P M L S LP p kP P LP P UP pC p mC p kC P LC P UC pS t D e v ( O v e r a l l )S t D e v ( W i t h i n )S a m p l e NM e a nL S LT a r g e tU S L1 3 5 6 5 0 . 6 7 7 4 8 5 6 . 3 4 6 0 7 9 4 . 3 21 0 4 4 3 8 . 2 5 5 8 4 4 8 . 0 9 4 5 9 9 0 . 1 6 5 0 0 0 0 . 0 0 1 0 0 0 0 . 0 0 4 0 0 0 0 . 0 00 . 4 80 . 5 20 . 4 80 . 5 00 . 5 00 . 5 20 . 5 60 . 5 20 . 5 41 . 3 3 8 3 81 . 2 2 9 6 41 0 06 0 0 . 0 7 25 9 8 . 0 0 06 0 0 . 0 0 06 0 2 . 0 0 0E x p . O v e r a l l P e r f o r m a n c eE x p . W i t h i n P e r f o r m a n c eO b s e r v e d P e r f o r m a n c eO v e r a l l C a p a b i l i t yP o t e n t i a l ( W i t h i n ) C a p a b i l i t yP r o c e s s D a t aW i t h i nO v e r a l lExample 3A Histogram of camshaft length suggests mixed populations. Further investigation revealed that there are two suppliers for the camshaft. Data was collected over camshafts from both sources. Are the two suppliers similar in performance? If not, what are your remendations? Example 3A Stat ? Quality Tools ? Capability Sixpack(Normal) Example 3A 2 01 006 0 0 . 56 0 0 . 05 9 9 . 55 9 9 . 0X b a r a n d R C h a r tS u b g rMeanM e a n = 5 9 9 . 5U C L = 6 0 0 . 3L C L = 5 9 8 . 83210RangeR = 1 . 3 4 1U C L = 2 . 8 3 5L C L = 02 01 00L a s t 2 0 S u b g r o u p s6 0 16 0 05 9 95 9 8S u b g r o u p N u m b e rValues6 0 2T5 9 8C a p a b i l i t y P l o tP r o c e s s T o l e r a n c eIIIIIIIIIS p e c i f i c a t i o n sW i t h i nO v e r a l l6 0 1 . 05 9 9 . 55 9 8 . 0N o r m a l P r o b P l o t6 0 1 . 05 9 9 . 55 9 8 . 0C a p a b i l i t y H i s t o g r a mW i t h i nS t D e v :C p :C p k :0 . 5 7 6 4 2 91 . 1 60 . 9 0O v e r a l lS t D e v :P p :P p k :C p m :0 . 6 2 0 8 6 51 . 0 70 . 8 30 . 8 7P r o c e s s C a p a b i l i t y f o r C a m s h a f t L e n g t h ( S u p p l i e r A )Example 3A 2 01 006 0 46 0 26 0 05 9 8X b a r a n d R C h a r tS u b g rMean11M e a n = 6 0 0 . 2U C L = 6 0 2 . 5L C L = 5 9 8 . 07 . 55 . 02 . 50 . 0RangeR = 3 . 8 9 0U C L = 8 . 2 2 5L C L = 02 01 00L a s t 2 0 S u b g r o u p s6 0 3 . 56 0 1 . 05 9 8 . 55 9 6 . 0S u b g r o u p N u m b e rValues6 0 25 9 8C a p a b i l i t y P l o tP r o c e s s T o l e r a n c eIIIIIIIIS p e c i f i c a t i o n sW i t h i nO v e r a l l6 0 56 0 05 9 5N o r m a l P r o b P l o t6 0 56 0 05 9 5C a p a b i l i t y H i s t o g r a mW i t h i nS t D e v :C p :C p k :1 . 6 7 2 3 10 . 4 00 . 3 5O v e r a l lS t D e v :P p :P p k :1 . 8 7 8 6 10 . 3 50 . 3 1P r o c e s s C a p a b i l i t y f o r C a m s h a f t L e n g t h ( S u p p l i e r B )What’s Six Sigma Quality — Then Original Definition by Motorola: ? if the specification limits are at least 177。 11:29:3811:29:3811:29Friday, March 24, 2023 ? 1乍見翻疑夢,相悲各問年。 11:29:3811:29:3811:293/24/2023 11:29:38 AM ? 1成功就是日復(fù)一日那一點點小小努力的積累。 上午 11時 29分 38秒 上午 11時 29分 11:29: ? 楊柳散和風(fēng),青山澹吾慮。 2023年 3月 上午 11時 29分 :29March 24, 2023 ? 1業(yè)余生活要有意義,不要越軌。 11:29:3811:29:3811:29Friday, March 24, 2023 ? 1知人者智,自知者明。 2023年 3月 24日星期五 上午 11時 29分 38秒 11:29: ? 1楚塞三湘接,荊門九派通。 2023年 3月 上午 11時 29分 :29March 24, 2023 ? 1行動出成果,工作出財富。 ?) Example 4 A customer service manager wants to determine the process capability for his department. A primary performance index is the time taken to close a customer plaint. The goal for this index is to close a plaint within one calendar week. Performance over the last 400 plaints was reviewed. Example 4 Stat ? Quality Tools ? Capability Analysis (Weibull) Example 4 2 52 01 51 050U S LP r o c e s s C a p a b i l i t y f o r C o m p l a i n t C l o s u r eC a l c u l a t i o n s B a s e d o n E x p o n e n t i a l D i s t r i b u t i o n M o d e lP P M T o t a lP P M U S LP P M L S LP P M T o t a lP P M U S LP P M L S LP p kP P LP P UP pS c a l eS h a p eS a m p l e NM e a nL S LT a r g e tU S L1 2 2 9 7 0 . 8 01 2 2 9 7 0 . 8 0 * 7 5 0 0 0 . 0 0 7 5 0 0 0 . 0 0 *0 . 3 9 *0 . 3 9 *3 . 3 41 . 0 04 0 03 . 3 4 * *7 . 0 0E x p e c t e d L T P e r f o r m a n c eO b s e r v e d L T P e r f o r m a n c eO v e r a l l ( L T ) C a p a b i l i t yP r o c e s s D a t aExample 4A Stat ? Quality Tools ? Capability Sixpack (Weibull) Example 4A 4 0 03 0 02 0 01 0 002 41 680I n d i v i d u a l a n d M R C h a r tO b s e r .Individual ValueM e a n = 3 . 3 4U C L = 1