A major U.S. bank wishes to determine if the average credit card balance depends on the type

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A major U.S. bank wishes to determine if the average credit card balance depends on the type of credit card used. Under consideration are Visa, MasterCard, Discover, and American Express. The sample sizes to be used for each level are 25, 25, 26, and 23, respectively.

a. Describe the parameter of interest for this analysis.

b. Determine the factor associated with this experiment.

c. Describe the levels of the factor associated with this analysis.

d. State the number of degrees of freedom available for determining the between-sample variation.

e. State the number of degrees of freedom available for determining the within-sample variation.

f. State the number of degrees of freedom available for determining the total variation.

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