Question: In a study comparing various drink types (tea, energy drink, coffee with cream, lime soda, etc.) on teenagers desire for additional drinks after various lengths

In a study comparing various drink types (tea, energy drink, coffee with cream, lime soda, etc.) on teenagers’

desire for additional drinks after various lengths of time, coffee with cream had the least effect. In one analysis for coffee with cream, the researchers reported that desire ratings were significantly higher at 20 minutes compared with the baseline (t = 3.68, df = 25,P = 0.0011)

but not significantly different for the other time points

(P-values > 0.45). Explain why these analyses used statistical methods for dependent samples, identify the sample size, and interpret the P-value for the significant result.

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