With statistics! i'm failing a shampoo company recently paid a consulting firm to produce a study to determine if using their product resulted in cleaner hair than other brands. what is wrong with this study? a) this is a self-interest study. b) the conclusion is based on a voluntary response sample. c) the relationship between two variables implies one causes the other. d) the study included loaded questions.

A) This is a self-interest study.

Step-by-step explanation:

Given is that a shampoo company recently paid a consulting firm to produce a study to determine if using their product resulted in cleaner hair than other brands.

We can see that this study is based on the self interest of the shampoo company.

Therefore, the thing wrong with this study is that it is a self-interest study.

answer: y = -2.5x - 15

              (-6,0)

step-by-step explanation:

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step-by-step explanation:

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