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The logistics company wants to know if the time it takes to receive shipments is the...

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Question

Statistics

The logistics company wants to know if the time it takes toreceive shipments is the same or different for two shippingcompanies. A random sample of delivery times is selected for eachof the two shipping firms.

The null and alternative hypotheses are:

?0:(?1−?2)=0

??:(?1−?2)≠0

A 0.10 significance level is chosen for this two-tailedtest.

The samples are selected, and the results are:

?1 = 14.8 ????  ?1 = 4.6 ?????1 = 35

?2 = 17.4 ????  ?2 = 4.9 ?????2 = 47

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