TABLE 14-5
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. 
-Referring to Table 14-5, a p control chart is to be made for these data. The estimate of the standard error of the proportion of disks with bad sectors is ________.
Definitions:
Australian Dollar
The currency of Australia, often represented by the symbol AUD or A$.
Economic Trends
Patterns or tendencies that emerge in economic data over time, indicating the general direction of economic activities and health.
Disposable Income
The sum of money households can spend or save after deducting income taxes.
Capital Expenditure
Funds used by a company to acquire or upgrade physical assets such as property, industrial buildings, or equipment, intended to improve long-term performance.
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