To compare the cost of three shipping methods,a firm ships material to each of four different destinations over a six-month period.The average cost per shipment is shown below. 
For the appropriate type of ANOVA,total degrees of freedom would be:
Definitions:
Rejection Region
The range of values in hypothesis testing that if the test statistic falls into, leads to the rejection of the null hypothesis.
Ice Cream Flavors
Various unique tastes of ice cream created by altering ingredients and mixtures in its production.
Random Sample
A sample drawn from a population in such a way that every member of the population has an equal chance of being selected.
Sales Data
Information collected about the number of products or services sold in a given time period.
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