Which of the following is the best example of a statistical question? Group of answer choices

What was the best-selling single in 2018?

What are students’ favorite types of music?

What artist won a Grammy in 2012?

Where is the Rock-and-Roll Hall of Fame located?

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*

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