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> describe (coffee) vars n mean sd median trimmed mad min max range skew kurtosis se TypeA 1 5 15. 09 6. 64 15.47 15.

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> describe (coffee) vars n mean sd median trimmed mad min max range skew kurtosis se TypeA 1 5 15. 09 6. 64 15.47 15. 09 8. 3 8. 43 25. 22 16. 80 0.41 -1. 64 2. 97 TypeB 2 5 8.25 3.23 9. 95 8. 25 1. 8 3. 64 11. 17 7. 53 -0.41 -1. 94 1. 44> t. test (coffee$TypeA, coffee$TypeB, paired = TRUE, alternative = "two. sided") paired t-test data: coffeesTypeA and coffeesTypeB t = 2. 3444, df = 4, p-value = 0. 079 alternative hypothesis: true mean difference is not equal to 0 95 percent confidence interval: -1. 260708 14. 941807 sample estimates : mean difference 6. 84055

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