Question

Jason Lowrey is a frequent traveler between Los Angeles and San Francisco. For the past month, he wrote down the flight times for three different airlines. The results are contained in the attached file: Flight Times Spring 2019.

Use the .05 significance level and the six-step hypothesis-testing process to check if there is a difference in the mean flight times among the three airlines. Write a statement to Mr. Lowrey explaining your results. Do your work in Excel

Western Air	NW Skyway	Skyliner
52	51	50
55	46	53
60	52	48
58	48	62
52	51	53
49	55	49
49	47	50
51	47	49
	50	54
	60	54
	51	51
	49	49
		49
		50

Answer 1

Go to excel data analysis tab -> select one way ANOVA->select data click ok...

Following is the output of ANOVA:

Hypotheses are:

H0: There is no difference in the mean flight times among the three airlines.

Ha: There is a difference in the mean flight times among the three airlines.

The level of significance is 0.05

The critical value is 3.305

The F test statistics is

F = 1.172

Since F < 3.305 so we fail to reject the null hypothesis.

The p-value is 0.3231

Since p-value is greater than 0.05  so we fail to reject the null hypothesis.

Conclusion: We cannot conclude that there is a difference in the mean flight times among the three airlines.