Question 16

It is thought that prehistoric Indians did not take their best tools, pottery, and household items when they visited higher elevations for their summer camps. It is hypothesized that archaeological sites tend to lose their cultural identity and specific cultural affiliation as the elevation of the site increases. Letxbe the elevation (in thousands of feet) for an archaeological site in the southwestern United States. Letybe the percentage of unidentified artifacts (no specific cultural affiliation) at a given elevation. Suppose that the following data were obtained for a collection of archaeological sites in New Mexico:

x	5.75	6.75	7.00	7.25	7.75
y	24	10	21	53	51

Findbfor the equation of the least-squares line. Round your answer to three decimal places.

Group of answer choices

-17.864

15.864

-15.864

14.864