Cynthia wants to know the favorite band of all 5th graders in her school. She asks 10 of her friends from the 5th grade Art Club. How would you describe this sample?

Question 8 options:

This is a valid sample since she only asked 5th graders.

This sample is valid because it is a Simple Random Sample.

This sample is invalid because it is a Systematic Random Sample.

This sample is invalid because it is a Convenience Sample.

I think this is invalid because it is a convenience sample. All of the 5th graders she asked were her friends, and they were all in the art club.

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Step-by-step explanation:

i'm going to search it

step-by-step explanation:

answer: evaluate the objective function at each vertex to determine which - and -values, if any, maximize or minimize the function. example: find the minimum value and maximum value of the objective function f ( x , y ) = 4 x + 5 y , subject to the following constraints