Q5 - Shipping Coordinator: If we send your shipment

[mcmassier]

Can someone explain the reasoning of the answer (D) vs. the explanation in (E) please. Seems either could be how the customer misinterprets this esplanation.
Thank you.

[noah]

I changed the title of your post - notice that you're supposed to put in the first 5 or so words of the stimulus.

In this question you're asked to see what the customer has misinterpreted.

The shipping coordinator explains the different between air and ground shipping:

air: arrives tomorrow morning, more expensive
ground: arrives either tomorrrow or next day, less expensive

The customer than says that she has to choose air to get the shipment tomorrow. But, didn't the coordinator just say that ground might get there tomorrow? Ummm, hello, customer?

This is what (D) points out.

(A) is about reliability. Out of scope.

(B) is something the customer correctly interpreted.

(C) is similar to (B), the customer understands that air is more expensive.

(E) is tempting, however the customer doesn't state that the speed is because of the cost. The customer simply believes that the more expensive shipping is faster, not that it's faster because it's more expensive.

[jh2352]

D is the correct answer because it is the incorrect contrapositive of the initial conditional logical in the Shipping Coordinator's statement?

[mitrakhanom1]

I thought B and D are premise boosters. How are they not? I picked E. Can somebody please explain the differences between B, D, and E?

[rinagoldfield]

Thanks for your post, Mitrakhanom1!

The first thing I want to clarify is that this kind of question doesn’t follow the same premise – conclusion structure that other question types follow. Rather, we have to spot the difference between what the two parties say.

In this case, the shipping coordinator says that ground carrier will deliver the package “tomorrow or the next day.”

The customer assumes ground carrier won’t arrive tomorrow, overlooking that “tomorrow” is one of the options presented by the ground carrier.

(D) gets at this misunderstanding. The customer overlooks that possibility that a package sent by ground carrier could arrive tomorrow.
(B) restates something the shipping coordinator said, but does not point to something the customer misunderstood.
(E) generalizes from the shipping coordinator’s statement. However, there is no evidence that the customer makes such a generalization.

Hope this helps.