Delta Flights: According to the Bureau of Transportation Statistics, 77.4% of Delta Airline’s flights arrived on time in 2010. The company is trying to improve on-time arrivals. They test the...



Delta Flights:According to the Bureau of Transportation Statistics, 77.4% of Delta Airline’s flights arrived on time in 2010. The company is trying to improve on-time arrivals. They test the hypotheses H0: p = 0.774 versus Ha: p > 0.774.


They calculate a P‑value of 0.03. Using a significance level of 0.05, which of the following is the best explanation for how to use the P‑value to reach a conclusion in this case?




  1.  Since the P‑value is less than the significance level, we reject the null hypothesis.

  2.  Since the P‑value is less than the significance level, we fail to reject the null hypothesis.

  3.  Since the P‑value is less than the significance level, we accept the null hypothesis.




Jun 09, 2022
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