The Sales Records of Two Branches of a Department Store $\mu$

question 36

Essay

The sales records of two branches of a department store over the last 12 months are shown below. (Sales figures are in thousands of dollars.) We want to use the Mann-Whitney-Wilcoxon test to determine if there is a significant difference in the sales of the two branches.
a.Compute the sum of the ranks (T) for branch A.
b.Compute the mean $\mu$ _T.
c.Compute $\sigma$ _T.
d..
Use $\alpha$ = 0.05 and test to determine if there is a significant difference in the populations of the sales of the two branches.

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Definitions:

Contra Account

An account that is used to offset another account on the balance sheet, such as accumulated depreciation for fixed assets.

Legal Liability

The responsibility imposed by law to compensate for or rectify any harm, loss, or damage one's actions or decisions have caused to others.

Sales Taxes

These are taxes imposed by governments on the sale of goods and services.

Sick Pay

Compensation paid by employers to employees during periods when they are unable to work due to illness.