SCENARIO 15-8
Recently, a University Switched to a New Type

question 36

Essay

SCENARIO 15-8
Recently, a university switched to a new type of computer-based registration.The registrar is concerned with the amount of time (hours) 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. $\begin{array}{rrrl}\text { Day}&\text { Range}&\text { Mean }&\text {Std.Dev. }\\1 & 10 & 5.250 & 3.4949 \\2 & 31 & 15.250 & 10.3060 \\3 & 13 & 20.375 & 4.9262 \\4 & 21 & 22.875 & 8.3911 \\5 & 35 & 8.500 & 11.3767 \\6 & 18 & 7.875 & 6.9372 \\7 & 25 & 11.250 & 8.5815 \\8 & 30 & 7.875 & 9.5235 \\9 & 17 & 10.250 & 6.3640 \\10 & 22 & 9.500 & 7.8740 \\11 & 27 & 7.875 & 8.7086 \\12 & 26 & 12.875 & 9.3723\end{array}$
-Referring to SCENARIO 15-8, an X 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 mean of the sample ranges.For this data set, the value of A2 is .

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Definitions:

Japanese Labor Relations

The system and practices governing employment and labor unions in Japan, characterized by lifelong employment, seniority systems, and enterprise unions.

Communist Party of China

The founding and ruling political party of the People's Republic of China, overseeing the country's communist government and policies.

Labor-management Practices

The strategies, policies, and actions taken by both labor unions and management in the negotiation and administration of work-related issues.

Australian Labor Relations

The framework of laws, practices, and societal norms that govern the labor market and employer-employee relationships in Australia.