| Process Capability Studies (2pts) |
| A) The following 100 data points were recorded |
| 17.4756018256 | | Process specification |
| 18.8222308943 | | minimum | 13.00000 |
| 21.9263357436 | | maximum | 25.00000 |
| 17.9707338631 |
| 20.5415167739 | | Calculate the process capability indices, Cp and Cpk (make sure to use formulas to calculate the answer, never type a literal answer in Excel) |
| 20.4999850948 |
| 18.4081814051 |
| 19.4678275806 | | Cp | | (.3 pt) |
| 21.3217030889 |
| 18.663358404 | | Cpk | | (.3 pt) |
| 20.7052883362 |
| 17.4756018256 |
| 21.8197146664 |
| 19.0230540819 |
| 20.7488445151 |
| 22.6015622332 | | B) Crunchy Potato Chip plant sells packaged chips with a printed net weight of 850 grams. Their packaging specification limits are +/- 12 grams of this published fill weight. Currently the process is running at a mean of 856 grams with a standard deviation of 2.99 grams. The firm requires a process capability ration of at least 1.33 to be deemed "capable." Is the process capable? Is an adjustment needed? |
| 20.4756336647 |
| 22.109639715 |
| 17.9970419933 |
| 20.6447555627 |
| 23.3870657265 |
| 20.7500292536 | | Cp | | (.3 pt) |
| 21.0039479704 |
| 20.3095833616 | | Cpk | | (.3 pt) |
| 17.7231009341 |
| 21.7321284595 | | Capable? | | (.2 pt) |
| 20.88390077 | | Why? | | | | (.2 pt) |
| 20.410961672 |
| 18.2967249983 |
| 18.6272041665 |
| 19.1852993042 | | Adjustment needed? | | | (.2 pt) |
| 20.45372993 | | Why? | | | | (.2 pt) |
| 17.870861627 |
| 19.9160619953 |
| 21.1849199538 |
| 17.4756018256 |
| 19.7352972375 |
| 15.4045681859 |
| 21.7334275293 |
| 21.7463086416 |
| 22.8160258999 |
| 21.2150765564 |
| 21.6074943538 |
| 20.5094104215 |
| 23.2991685706 |
| 18.9047353244 |
| 13.9276851189 |
| 17.1995836071 |
| 21.0448775887 |
| 19.0835556472 |
| 20.8314624169 |
| 15.7178488255 |
| 19.5282162089 |
| 18.4004749201 |
| 19.3568612618 |
| 19.9411186863 |
| 24.5097190964 |
| 15.5967352201 |
| 21.8167545339 |
| 20.717325067 |
| 17.0953707719 |
| 21.7680078901 |
| 17.4756018256 |
| 16.2378134121 |
| 18.4886285835 |
| 22.090102994 |
| 18.3603493666 |
| 21.0562802133 |
| 20.6412426717 |
| 20.8238375989 |
| 23.9710945429 |
| 16.9145478495 |
| 21.7253843459 |
| 19.8438898789 |
| 21.825983714 |
| 22.1622757536 |
| 20.3428054843 |
| 19.1601076758 |
| 20.0371530061 |
| 19.1263502551 |
| 19.7240387985 |
| 20.1002200072 |
| 20.2235779863 |
| 19.4866301033 |
| 19.0267223809 |
| 21.6833230309 |
| 23.9035314657 |
| 18.6839963819 |
| 20.8880348485 |
| 18.5912247058 |
| 17.7830394293 |
| 19.3868293592 |
| 20.9580876178 |
| 21.0462392939 |
| 23.9093811671 |
| 19.7565652248 |
| 19.6354324502 |
| 21.3357098332 |
| 17.6770685452 |
| 23.7969430401 |
Laynemo
test_review.xls
