Question

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

The logistics company wants to know if the time it takes to receive shipments is the same or different for two shipping companies. A random sample of delivery times is selected for each of 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-tailed test.

The samples are selected, and the results are:

?1 = 14.8 ????   ?1 = 4.6 ????   ?1 = 35

?2 = 17.4 ????   ?2 = 4.9 ????   ?2 = 47

Math   Statistics-And-Probability   
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