TABLE 17-8 Recently, a University Switched to a New Type of Computer-Based

question 56

Short Answer

TABLE 17-8
Recently, a university switched to a new type of computer-based registration. The registrar is concerned with the amount of time students are spending on the computer registering under the new system. She decides to randomly select 8 students on each of the 12 days of the registration and determine the time each spends on the computer registering. The range, mean, and standard deviation of the times required to register are in the table that follows.

-Referring to Table 17-8, an chart is to be used for the time required to register. One way to obtain the control limits is to take the grand mean and add and subtract the product of A2 times the average of the sample ranges. For this data set, the value of A2 is ________.

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Definitions:

Concrete Meaning

A description or term that denotes specific, tangible qualities or conditions, easily understood without ambiguity.

Empirically Measure

To quantify or measure based on observation or experience rather than theory or pure logic.

Logical Statements

Propositions that convey reasoning and can be analyzed as true or false based on logic.

Systems

Organized sets of interrelated elements or components that function together as a whole to achieve a particular goal or handle specific tasks.