TABLE 18-7 A Supplier of Silicone Sheets for Producers of Computer Chips

question 118

Short Answer

TABLE 18-7
A supplier of silicone sheets for producers of computer chips wants to evaluate her manufacturing process.She takes sample sizes of 5 from each day's output and counts the number of blemishes on each silicone sheet.The results from 20 days of such evaluations are presented below.
Sheet
Day 1 2 3 4 5 Mean Range
1 8 10 14 6 5 8.6 9
2 8 13 6 6 10 8.6 7
3 10 12 7 7 9 9.0 5
4 5 9 12 7 10 8.6 7
5 8 3 8 9 10 7.6 7
6 9 7 9 6 9 8.0 3
7 10 10 5 7 6 7.6 5
8 10 9 10 6 5 8.0 5
9 6 10 6 9 9 8.0 4
10 6 9 8 6 8 7.4 3
11 8 5 6 10 10 7.8 5
12 6 4 7 7 12 7.2 8
13 7 5 7 6 9 6.8 4
14 5 8 8 7 6 6.8 3
15 7 12 10 6 10 9.0 6
16 7 11 4 7 8 7.4 7
17 8 4 5 4 7 5.6 4
18 11 4 11 11 10 9.4 7
19 6 10 6 10 10 8.4 4
20 6 12 12 6 8 8.8 6
She also decides that the upper specification limit is 10 blemishes.
-Referring to Table 18-7,an R chart is to be constructed for the number of blemishes.One way to create the upper control limit involves multiplying the mean of the sample ranges by D₄.For this data set,the value of D₄ is ________.

---

Definitions:

Information Flow

Information flow refers to the way information moves through an organization or system, facilitating decision-making and coordination.

Taxes and Tariffs

Mandatory financial charges imposed by a government on products, incomes, or activities, and tariffs specifically refer to taxes on imports or exports between sovereign states.

NPV

Net Present Value, a financial metric used to assess the profitability of an investment or project by discounting future cash flows to their present value.

Financial Return

The profit or loss generated on an investment over a particular period, expressed as a percentage of the investment's initial cost.