Soap Sales Narrative
In testing the hypotheses 
vs. 
, use the following statistics: 
, 
, 
, and 
, where 
and 
represent the number of Dial Soap sales in the two samples, respectively.
-Refer to Soap Sales Narrative. What conclusion can we draw at the 5% significance level? Justify your answer.
Definitions:
Straight-Line Method
A depreciation method that allocates an equal amount of depreciation expense for an asset over its useful life.
Semiannual Interest Expense
The amount of interest cost incurred every six months on borrowed funds.
Straight-Line Method
A method of calculating depreciation for accounting purposes, where an asset's cost is reduced equally over its useful life.
Amortization
The gradual reduction of a debt over a specific period of time through regular payments, or the allocation of the cost of an intangible asset over its useful life.
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