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

Question 15

Multiple Choice

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.

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