Wildlife researcher: At dawn on Saturday, I examined a set of tracks crossing a muddy trail and concluded that they had been made by a gray wolf. The tracks were unusually large for a canid and showed the narrow, elongated shape and closely grouped toe marks typical of wolves. Coyotes also live in the area and can leave similar tracks, but their tracks are generally smaller and differently proportioned. A gray wolf had also been reported in this part of the reserve several times during the previous week. Select Assumes to be true for the statement that describes something the researcher’s account implies the researcher assumes to be true, and select Assumes to be false for the statement that describes something the account implies the researcher assumes to be false. Make only two selections, one in each column.

Wildlife researcher: At dawn on Saturday, I examined a set of tracks : Two-part Analysis (TPA)

Assumes to be true	Assumes to be false
		The wolf reported during the previous week was the animal that made the tracks.
		The observed combination of size, shape, and toe pattern provides no reliable evidence that the tracks were made by a wolf rather than a coyote.
		The size of the tracks alone was sufficient to identify the animal as a wolf.
		The muddy surface had not distorted the tracks enough to make a coyote’s tracks appear to have the characteristics the researcher attributed to a wolf.
		Without the recent reports of a gray wolf in the area, the researcher would not have identified the tracks as wolf tracks.