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One problem with the pretest-posttest design is that participants

Which of the following is a disadvantage of using the strongest manipulation possible in research?

“Do you think it is important to reduce the huge amount of money spent during festivals?” is an example of a________ question.

Svetlana wants to know if a new sports drink improves physical performance. The number of push-ups each participant can complete in 1 minute is recorded first. The participants are then given 8 ounces of the sports drink, and the number of push-ups completed in 1 minute is recorded again. Svetlana finds that the number of push-ups completed is less after consuming the new sports drink. This finding is likely the result of a________ effect.

A study participant has a difficult time answering the question “Should parents increase the likelihood of desirable behaviors in their children by using reinforcement and punishment?” because it is a(n)________ question.

What is the solution to the following system of equations? 2x+3y=22 3x+y=19 Write your answer in the format (#, #) if there is a solution and `no solution` if it cannot be solved. (space between `,` and `#`)

What is the solution to the following system of equations? 4x – 2y + 2z = 8 -x + 3y – z = 5 2x – y + z = 4 Write your answer in the format (#, #, #) if there is a solution and `no solution` if it cannot be solved. (space between `,` and `#`)

What is the graphical meaning if three planes intersect along a single line, but no point is common to all three planes?

What does it mean graphically if a system of two equations has no solution?

What is the solution to the following system of equations? 4x – y + z = 25 3x – 3y + 4z = -23 x + 2y – 3z = 25 Write your answer in the format (#, #, #) if there is a solution and `no solution` if it cannot be solved. (space between `,` and `#`)