Interested!

same!

How do you navigate the tension between representative sample vs controlling for all else? I know in the Ideal Experiment session (https://7sage.com/lesson/the-ideal-experiment/) it is mentioned that by controlling for everything else, an experiment can best isolate a single difference. Why does C not fall into this category?

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Seems like the "shopping list" factor was a red herring that tries to trick you into selecting B? Ultimately it seems like it has no impact in this stimulus

If you're accounting for the comparable-ness between the two groups, answer choice B also seems to require you to make the assumption that the unnecessary items (resulting from the shopper having no list) are more expensive than "necessary" items (purchased by the shoppers having lists).

Can you really say for Answer Choice A that Kim agrees with that statement? I would think it is ambiguous. Also, how are you justified in making an inference for Laird about pure research and medical applications? It seems to me like its an assumption made out of nowhere.. How are we able to conflate medical applications = saving lives?

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Shouldn't answer choice C receive 2 Xs (anti-supported) instead of checks (and that's why it fails the MSS test)?

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