A local electronics retailer recently conducted a study on purchasers of large screen televisions.The study recorded the type of television and the credit account balance of the customer at the time of purchase.They obtained the following results. 
Construct a table of column percentages.
Definitions:
Normal Populations
Refers to groups whose underlying distribution follows a normal (Gaussian) distribution, characterized by a symmetric bell-shaped curve.
Confidence Interval
A set of values, taken from data samples, which is predicted to include the value of an unspecified population attribute.
Standard Deviation
Standard deviation is a statistical measure of the dispersion or variability within a data set, indicating how much individual data points deviate from the mean.
Normal Distribution
A bell-shaped frequency distribution curve that is symmetric about the mean, showing that data near the mean are more frequent in occurrence.
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