Your mother-in-law says that rubbing a carpet stain with toothpaste before applying stain remover helps take the stain out.You are skeptical.You asked an impartial neighbor to set up a randomized experiment to find out whether there is a relationship between the stain removing method and the outcome.She went home to collect and analyze the data, then called you and said "In a chi-square test, I would choose the alternative hypothesis," and then hung up.What do you conclude?
A)The toothpaste didn't make a difference.
B)The toothpaste did help after all.
C)The toothpaste had a significant effect but you don't know in which way yet.
D)The toothpaste made things worse.

Question

Quizplus · Accepted Answer

Choosing the alternative hypothesis in a chi-square test suggests that there is a significant difference or relationship between the variables being tested, in this case, the stain removing method and the outcome. However, without more information, we cannot determine if the toothpaste made things better or worse, only that it had a significant effect.

Your Mother-In-Law Says That Rubbing a Carpet Stain with Toothpaste