Department Store
a Large Department Store Records the Number of Returns

question 124

Essay

Department store
A large department store records the number of returns per day in women's dresses for reasons such as wrong size; husband didn't like it,color,etc.The manager of the women's dresses department recalls from her statistics class in college that the Poisson distribution might describe such events.A random sample of 150 days is taken.The number of returns per day in the sample as well as the observed frequencies are shown below: $$\begin{array} { | c | c | } \hline \begin{array} { c } \text { Number of } \\\text { Returns Per Day }\end{array} & \begin{array} { c } \text { Observed } \\\text { Frequency }\end{array} \\\hline 0 & 21 \\1 & 37 \\2 & 44 \\3 & 30 \\4 & 14 \\> 4 & 4 \\\hline\end{array}$$
-She tests the hypothesis that returns per day are Poisson distributed with a population mean equal to 1.90.Her significance level is 0.05.State the appropriate conclusion at the 0.05 significance level.

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Definitions:

GAAP

Generally Accepted Accounting Principles, a set of accounting standards and practices used in the preparation of financial statements in the United States.

Cash Flow Statement

A financial statement that shows how changes in balance sheet accounts and income affect cash and cash equivalents, breaking the analysis down to operating, investing, and financing activities.

Nonfinancial Firms

Companies that primarily deal in products and services rather than financial instruments and markets, such as manufacturing, retail, and technology firms.

Acquisitions

The process by which one company purchases most or all of another company's shares to gain control of that company.