s- (15 Points) uppose that sample results representative of the times for Delta

Question

s- (15 Points) uppose that sample results representative of the times for Delta Airlines and Northwest Ai their Internet web sites are as follows: rlines to locate fight information Delta: Sample Mean 2.5 minutes, Sample Standard Deviation - 0.8 minutes, Sample Size Northwest: Sample Mean- 2.1 minutes. Sample Standard Deviation a) Formulate the hypotheses if the 22 1.1 minutes, Sample Size 20 purpose is to test for a significant ditterence between the mean times tor the two airlines b) Perform the are equal test and describe your conclusion, using 0.05 level of significant. Assume that the population variance

Explanation / Answer

p-value = 0.1903

As p-value is greater than the significance level of 0.05, we fail to reject the null hypothesis.

this means there are not sufficient evidence to conclude that two means are different.

Given Data Sample 1 Sample 2 Name Delta NW mean 2.5 2.1 Sample size 22 20 Std. dev. 0.80 1.10

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