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

question 36

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.
$\begin{array}{rrrr} \underline {\text { Day }}& \underline {\text { Range }}& \underline {\text { Mean }}& \underline {\text { Std.Dev. }}\\ 1 & 10 & 5.250 & 3.4949 \\2 & 31 & 15.250 & 10.3060 \\3 & 13 & 20.375 & 4.9262 \\4 & 21 & 22.875 & 8.3911 \\5 & 35 & 8.500 & 11.3767 \\6 & 18 & 7.875 & 6.9372 \\7 & 25 & 11.250 & 8.5815 \\8 & 30 & 7.875 & 9.5235 \\9 & 17 & 10.250 & 6.3640 \\10 & 22 & 9.500 & 7.8740 \\11 & 27 & 7.875 & 8.7086 \\12 & 26 & 12.875 & 9.3723\end{array}$
-Referring to Table 17-8, an $\bar { X }$ chart is to be used for the time required to register. The lower control limit for this data set is ________, while the upper control limit is ________.

---

Definitions:

Financial Statement

A written record that conveys the business activities and the financial performance of a company, typically including the balance sheet, income statement, and cash flow statement.

Market Rate

The prevailing interest rate available in the marketplace for securities or loans of a similar risk and maturity.

Corporation's Bonds

Debt securities issued by corporations to raise capital, with the promise to pay back the principal amount along with interest at specified dates.

Interest Rate

The proportion of a loan that is charged as interest to the borrower, typically expressed as an annual percentage.