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a.Describe the importance of the problem definition process in retail research.
b.Apply the problem definition process to the question of whether a new product has added to a supermarket's overall sales.
Non-Negative
A term to describe numbers that are both positive and zero, but not negative.
Chi-Squared Distribution
A probability distribution that arises in statistics as the distribution of the sum of the squares of k independent standard normal random variables.
Variance
A statistical measure of the dispersion of a set of data points in relation to their mean.
Mean
The arithmetic average of a set of numbers, calculated by adding all the numbers together and dividing by the count of numbers.
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