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

question 237

Short Answer

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. $\begin{array}{cccc}\underline{\text { Day }} & \underline{\text { Range}}& \underline{\text { Mean }}& \underline{\text { Std.Dev. }}\\1 & 10 & 5.250 & 3.4949 \\2 & 31 & 15.250 & 10.3060 \\3 & 13 & 20.375 & 4.9262 \\4 & 21 & 22.875 & 8.3911 \\5 & 35 & 8.500 & 11.3767 \\6 & 18 & 7.875 & 6.9372 \\7 & 25 & 11.250 & 8.5815 \\8 & 30 & 7.875 & 9.5235 \\9 & 17 & 10.250 & 6.3640 \\10 & 22 & 9.500 & 7.8740 \\11 & 27 & 7.875 & 8.7086 \\12 & 26 & 12.875 & 9.3723\end{array}$

-Referring to SCENARIO 15-8, an X chart is to be used for the time required to register.The center line of this chart is located at .

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Definitions:

Direct Materials Quantity Variance

The difference between the actual quantity of direct materials used in production and the standard quantity expected to be used, multiplied by the standard cost per unit.

Materials Cost Per Yard

The expense associated with acquiring raw materials needed for manufacturing, measured per yard.

Yards Per Unit

A measurement unit indicating how many yards of material are used or produced per unit of finished goods.

Units Of Production

Units of production is a depreciation method that allocates the cost of an asset over its useful life based on the number of units it produces.