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Mathematics, 13.12.2021 04:10 juvie65

A coffee shop claims that its fresh-brewed drinks have a mean caffeine content of 140 mg per 8 ounces. You want to test this claim. You find that a random sample of 42 eight ounce servings has a mean caffeine content of 146 mg and a
standard deviation of 22 mg. At a = 0.05, test this claim.

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