Instruction 18-4
a Manufacturer of Computer Disks Took Samples of 240

question 17

Essay

Instruction 18-4
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.
$$\begin{array} { l l l } \text { Day } & \text { Bad } & \text { \% Bad } \\1 & 9 & 0.037500 \\2 & 7 & 0.029167 \\3 & 4 & 0.016667 \\4 & 6 & 0.025000 \\5 & 8 & 0.033333 \\6 & 3 & 0.012500 \\7 & 6 & 0.025000 \\8 & 10 & 0.041667 \\9 & 16 & 0.066667 \\10 & 24 & 0.100000 \\11 & 15 & 0.062500 \\12 & 9 & 0.037500 \\13 & 4 & 0.016667 \\14 & 8 & 0.033333 \\15 & 6 & 0.025000\end{array}$$
-Referring to Instruction 18-4,construct a p control chart for these data.

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Definitions:

Optimal Choice

The best possible selection among various alternatives, considering constraints and objectives, to maximize or minimize desired factors such as utility, profit, or costs.

Consumer

An individual or group that purchases goods and services for personal use and not for manufacture or resale.

Marginal Utility

The additional satisfaction or benefit gained from consuming one more unit of a good or service.

Pretzels

A type of baked pastry made from dough that is commonly shaped into a knot and often salted.