MTTR = 3 mttr.core <- ttk$mttr[ttk$bu == CORE & ttk$departamento == GUATEMALA ] t.test(x = mttr.core, mu = 3, alternative = two.sided ) One Sample t-test data: mttr.core t = 5, df = 600, p-value = 4e-07 alternative hypothesis: true mean is not equal to 3 95 percent confidence interval: 3.36 3.81 sample estimates: mean of x 3.58 Interpretación: Existe suficiente evidencia para rechazar la H0 de que el tiempo promedio de reparacion es de 3 horas en CORE.