TABLE 17-5
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 17-5, 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:
Iron
A chemical element with symbol Fe and atomic number 26, known for its high strength and magnetic properties.
Limiting Reactant
The reactant in a chemical reaction that limits the amount of product that can be formed because it is used up first.
Theoretical Yield
The maximum amount of product that can be generated from a given amount of reactants in a chemical reaction, under ideal conditions.
Limiting Reactant
The reactant in a chemical reaction that limits the amount of product that can be formed; the reaction stops when all of this reactant is consumed.
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