Instruction 18-11
Recently, a University Switched to a New Type

question 115

Short Answer

Instruction 18-11
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 eight 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.
$\begin{array}{llll}\text { Day } &\text { Range } & \text { Mean }&\text { Std. Dev }\\\hline1 & 10 & 5.250 & 3.4949 \\2 & 31 & 15.250 & 10.3060 \\3 & 13 & 20.375 & 4.9262 \\4 & 21 & 22.875 & 8.3911 \\5 & 35 & 8.500 & 11.3767 \\6 & 18 & 7.875 & 6.9372 \\7 & 25 & 11.250 & 8.5815 \\8 & 30 & 7.875 & 9.5235 \\9 & 17 & 10.250 & 6.3640 \\10 & 22 & 9.500 & 7.8740 \\11 & 27 & 7.875 & 8.7086 \\12 & 26 & 12.875 & 9.3723\end{array}$

-Referring to Instruction 18-11,an R chart is to be constructed for the time required to register.One way to create the upper control limit involves multiplying the mean of the sample ranges by D₄.For this data set,the value of D₄ is _______.

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Definitions:

Capital Punishment

The legal authorization to put someone to death as a penalty for a crime.

Gender Equality

The state in which access to rights or opportunities is unaffected by gender, allowing individuals of all genders to participate fully in all societal areas.

Criminal Behaviour

Actions that violate laws or social norms and are subject to legal sanctions or disapproval.

Stigmatization

The act of attaching negative labels or stereotypes to individuals or groups, leading to discrimination or social exclusion.