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Question

Madeline is skeptical of her friend's claim that Gerald's Café has different level of coffee (in terms of caffeine content) than Sabine's Beans does. So, Shelby takes a random sample of large coffees from both shops, and measures the amount of caffeine content in each coffee. Here is a summary of the results:

(see Pic)

Formulate the hypothesis test (?=0.05) and test if Madeline is right. Write the conclusion of the hypothesis test.

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