Seven people were asked to watch and rank four movies and their preferences are recorded in the matrix A below 1 2 3 1 1 4 2 4 1 2 4 3 3 1 3 3 1 3 2 2 3 2 4 4 2 4 1 4 A = Explain how one could use a dot product with a vector from R' to determine which movie is most popular, and then determine which movie was most popular among the 7 viewers. This is open to interpretation so explain your thought process.

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