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

question 33

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:

Misallocation

The inefficient distribution or usage of resources in an economy, leading to outcomes where resources could have been better utilized elsewhere.

Price Supports

Government interventions to maintain the market price of a commodity at a certain level to prevent the price from falling below a predetermined minimum.

Domestic

Pertaining to or related to the home, household, or one's own country versus foreign or international counterparts.

Foreign Economies

Refers to the economies of other nations outside of one's own, considering differing political, economic, and cultural contexts in international trade and relations.