Indicate whether each of the following constitutes data collected from a population or a sample. a. A group of 25 patients selected to test a new drug b. Total items produced on a machine for each year from 2001 6. to 2015 c. Yearly expenditures on clothes for 50 persons d. Number of houses sold by each of the 10 employees of a real estate agency during 2015

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A: given matrices are

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A: Since you have asked multiple question, we will solve the first question for you. If youwant any…

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Q: 1. Use expansion along the 3rd row -4 3 1 2 -1 1 7 5

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