Confidence Intervals and Hypothesis Testing

Such a small p-value gives a strong evidence against the null hypothesis (mu = 5.25) and in favor of the alternative hypothesis (mu < 5.25) Statistically significant results (at any of the common significance levels)- (z = -3.5, p = 0.0002)- On average, flying times for the new rout are less than 5.25 hours. ................
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