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Twenty-five percent of the customers entering a grocery store between 5 p.m. and 7 p.m. use an express checkout. consider five randomly selected customers, and let x denote the number among the five who use the express checkout.

What is the area of a triangle with vertices at (-3 3) (-3,2) and (1,2)?

How can you find the mean absolute deviation (mad) for this set of data?