Statistics Solutions

[See Solution] Caffeine Content. A coffee shop claims that its fresh-brewed drink have a mean caffeine content of 80 milligrams per 5 ounces you work for a

Question: Caffeine Content. A coffee shop claims that its fresh-brewed drink have a mean caffeine content of 80 milligrams per 5 ounces you work for a city health agency and are asked to test this claim. You find that a random sample of 42 five-ounce servings has a mean caffeine content of 83 milligrams and a standard deviation of 35 milligrams. At \(\alpha=0.05\), ca you have enough evidence to reject the shop's claim?

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