A local children's boutique specializes in formal wear for young girls. It has recently hired a new seamstress. To assure the dresses have standard sizes, twenty samples of each 12 dresses that were labeled 3T were sampled
The average length from shoulder to hemline measured 21 inches with a range of 0.5 inches. A sample has just been taken with the following lengths: 21.25, 22.0, 21.5, 20.75, 21.25, 21.35, 21.35, 21.35, 21.35, 21.35, 21.35, and 21.35. Is the new seamstress performing at an acceptable quality level?
UCL = 21 + 0.5(0.266 ) = 21.133
LCL = 21 - 0.5(0.266 ) = 20.867
Range UCL = 1.716 * 0.5 = 0.858
LCL = 0.284 * 0.5 = 0.142
The new seamstress is not performing at an acceptable level because both the range of this last sample (1.25 ) and the x-bar (21.35 ) are too high.
You might also like to view...
When a foreign entity operates as a relatively self-contained and integrated unit within a foreign country, normally, its functional currency is the ____________________________________________________________
Fill in the blank(s) with correct word
To combat terrorism, many national governments such as the United States have a number of ______.
A. mandatory security programs B. security programs in which costs are billed to producers C. security programs in which costs are billed to consumers D. security programs financed from confiscation of bank accounts from the bad guys
The strategy of charging the highest possible price for a product during the introduction stage of its life-cycle is called price skimming.
Answer the following statement true (T) or false (F)
Refer to Table 4-2. The Net Profit Margin ratio for 2007 was approximately
A) 0.22. B) 0.18. C) 0.17. D) 0.12.