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

question 143

True/False

SCENARIO 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. $\begin{array}{ccc} \underline{\text { Day }}& \underline{\text { Bad }} & \underline{ \% \mathrm{Bad}}\\1 & 9 & 0.037500 \\2 & 7 & 0.029167 \\3 & 4 & 0.016667 \\4 & 6 & 0.025000 \\5 & 8 & 0.033333 \\6 & 3 & 0.012500 \\7 & 6 & 0.025000 \\8 & 10 & 0.041667 \\9 & 16 & 0.06667 \\10 & 24 & 0.100000 \\11 & 15 & 0.062500 \\12 & 9 & 0.037500 \\13 & 4 & 0.016667 \\14 & 8 & 0.033333 \\15 & 6 & 0.025000\end{array}$

-Referring to Scenario 18-5, the process seems to be in control.

---

Definitions:

Abstractness

A quality of being non-concrete or theoretical, representing ideas or concepts rather than physical realities.

Manufactured Item

A product that has been produced from raw materials through manual labor or machinery, often within an industrial or factory setting, designed for consumer use or further processing.

Clothing

Items worn on the body typically made from fabric, textiles, or animal skins, used for protection, modesty, and symbolic identification.

Hat

A head covering, often with a brim and sometimes signifying a particular role or status.