TABLE 18-5
a Manufacturer of Computer Disks Took Samples of 240

question 90

Essay

TABLE 18-5
A manufacturer of computer disks took samples of 240 disks on 15 consecutive days. The number of disks with bad sectors was determined for each of these samples. The results are in the table that follows.
$$\begin{array} { l l l } \text { Day } & \text { Bad } & \% \text { Bad } \\\hline 1 & 9 & 0037500 \\2 & 7 & 0.029167 \\3 & 4 & 0.016667 \\4 & 6 & 0.025000 \\5 & 8 & 0.033333 \\6 & 3 & 0.012500 \\7 & 6 & 0.025000 \\8 & 10 & 0.041667 \\9 & 16 & 0.066667 \\10 & 24 & 0.100000 \\11 & 15 & 0.062500 \\12 & 9 & 0.037500 \\13 & 4 & 0.016667 \\14 & 8 & 0.033333 \\15 & 6 & 0.025000\end{array}$$
-Referring to Table 18-5, construct a p control chart for these data.

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Definitions:

Additional Investment

Additional funds put into a business or project by its owners or investors to support operations, growth, or capital needs.

Owner's Equity

The residual interest in the assets of a company after deducting liabilities, representing the ownership stake of the shareholders.

Drawings

Withdrawals of cash or other assets from a business by the owner for personal use, affecting the equity of the business.

Total Revenues

The overall financial income stemming from the commercial sale of goods or services integral to a business's main operations.