Question

In: Statistics and Probability

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

Solutions

Expert Solution


  • Conclusion-        It is concluded that the null hypothesis Ho is rejected.

                                         Therefore, there is enough evidence to claim that population mean μ1​

is different than μ2​, at the 0.10 significance level.

orchestra answered 1 year ago
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