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iShort Answer-Show all your work and circle your answers. If the calculator was

ID: 3066831 • Letter: I

Question

iShort Answer-Show all your work and circle your answers. If the calculator was used to find a value, write which function was used. Round all answers to four decimal places unless otherwise specified. 13) (+ 4 points)For each of 200 randomly selected cities, a researcher compared data for the number of ch the city (x) and the number of ber=0.92. past decade (y). 200 She found the linear correlation coefficient to Does this suggest that when a ciy builds new churches this wll tend to cause an increase in the numberof homicides? Why or why not? No, because the re is ncauco thatc hufen will increase homiscles eople afound so they w Why do you think that a strong positive linear correlation coeficient was obtained? do mofecrime. The hore people thaf move te +hecihies, Crime wll happon, pachurches nng thefe ornet. The reason hy more churches are a round becaepeople 14) (+ 6 points) The data below show the cost of advertising (x), in thousands of dollars, and the number of p sold (y), in thousands, for each of eight randomly selected product lines. City thet has erime of farthes x9 2 3 4 2 5 9 10 theruca ?|85 52 5568608683 73 ompute the linear correlation coefficient. decimal places 652 b. Use Table Il to determine whether a tinear relation exists. (Write the critical value.) f was bi then Copi tical Va lves es, the

Explanation / Answer

13)

Based on the value of r, it suggests that as the value of one variable goes up, the value of another goes up as well. Hence, we can conclude that as the number of churches go up, the homicides go up as well.

People usually tend to move to cities for better employment opportunities and livelyhood and as a result of that the number of churches tend to go up and hence also the number of homicides.