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A comparison is made between two bus lines to determine if arrival times of their regular...

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Statistics

A comparison is made between two bus lines to determine ifarrival times of their regular buses from Denver to Durango are offschedule by the same amount of time. For 51 randomly selected runs,bus line A was observed to be off schedule an average time of 53minutes, with standard deviation 19 minutes. For 60 randomlyselected runs, bus line B was observed to be off schedule anaverage of 62 minutes, with standard deviation 15 minutes. Do thedata indicate a significant difference in average off-scheduletimes? Use a 5% level of significance.

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The test hypothesis isThis is a twosided test because the alternative hypothesis    See Answer
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