An Owner of Two Cats Is Trying to Decide If

An owner of two cats is trying to decide if it is cheaper to order cat food over the Internet or to buy the food locally. Listed below are the prices (in dollars) quoted for two bags of cat food from various manufacturers. Set up the alternative hypothesis for the claim that buying over the Internet (I) is cheaper than buying from the local stores (E) .

A) H_A: D_I is shifted to the right of D_E.
B) H_A: D_I is shifted to the left or right of D_E.
C) H_A: D_I is shifted to the left of D_E.
D) H_A: D_I is identical to D_E.

Correct Answer:

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