5 A t barden Restaurants when they test the shrimp harvest from a Peru fishery t

Question

5 A t barden Restaurants when they test the shrimp harvest from a Peru fishery they notice that the weight of the sample is within standard limits, but the range of the sample is not inside the standard limits. How can that be possible? Give a specific example 6. The area of coverage under the Normal curve for 3 sigma is 99.73% and is considered high quality. What is the area of coverage under the curve for 6 sigma? 7. If a Chicago based company makes and sells clock radios is this a: A. Independent demand item B. Dependent demand item Of the following, what is the best justification for "In-sourcing" a component part: A. It is being fabricated on old equipment B. Current methods have low scrap rates 8. The design is proprietary D. It is costly to make C.

Explanation / Answer

5) Example: The sample have 5 items. The desired weight of sample is 100. Thus mean weight has range of 95 to 105. The range of samples is 15. The weights of 5 items are: 100, 105, 80, 120, 95. In this case, average or mean weight = (100+105+80+120+95)/5 = 100. But, the range here is Maximum - Minimum = 120-80 = 40. So, mean is okay but range is not okay

6) The 6 sigma has 3.4 parts defective in 1 million parts. The area under the curve = 1 - 3.4/1000000*100 = 99.9997%

7) B

It is the dependent demand item as it has both clock and radio. If demand for clock goes down, the demand for the item will go down as people will prefer to purchase only radio

8) C

As the design is proprietary, there is secrecy involved and is best to produce in house.

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