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The table below shows the number of state-registered automatic weapons and the murder rate for several Northwestern states. X Y 11.8 14.4 8.4 6.9 3.3 2.8 2.5 2.5 0.9 11.3 10.2 6.6 6.6 6.4 6.5 4.7 x = thousands of automatic weapons y = murders per 100,000 residents Determine the regression equation in y = ax + b form and write it below. (Round to 2 decimal places) A) How many murders per 100,000 residents can be expected in a state with 10.6 thousand automatic weapons? Answer = Round to 3 decimal places. B) How many murders per 100,000 residents can be expected in a state with 9.6 thousand automatic weapons? Answer = Round to 3 decimal places.

Statistics students in Oxnard College sampled 11 textbooks in the Condor bookstore and recorded the number of pages in each textbook and its cost. The bivariate data are shown below: Number of Pages (x) 948 404 673 299 977 724 311 349 696 810 950 Cost(y) 68.88 46.24 65.38 39.94 75.62 66.44 37.66 35.94 + 48.76 69.6 80 A student calculates a linear model y = Use the model to estimate the cost when number of pages is 625. Cost = $ (Please show your answer to 2 decimal places.) x. (Please show your answers to two decimal places)

A regression analysis was performed to determine if there is a relationship between hours of TV watched per day (x) and number of sit ups a person can do (y). The results of the regression were: y=ax+b a=-1.158 b=27.773 r²=0.492804 r=-0.702 Use this to predict the number of sit ups a person who watches 12 hours of TV can do, and please round your answer to a whole number.