please answer them all

Question 3 Here is a bivariate data set. X y 24 27 34 54 30 64 37 72 11 -1 22 17 27 33 Find the correlation coefficient and report it accurate to four decimal places. r=The table below shows the number of state-registered automatic weapons and the murder rate for several Northwestern states. Inn-\"m \"W a: = thousands of automatic weapons 3; = murders per 100,000 residents This data can be modeled by the equation y = 0.85.7: + 3.98. Use this equation to answer the following; Special Note: I suggest you verify this equation by performing linear regression on your calculator. A) How many murders per 100,000 residents can be expected in a state with 2.6 thousand automatic weapons? Answer = [: Round to 3 decimal places. B) How many murders per 100,000 residents can be expected in a state with 10.6 thousand automatic weapons? Answer = [: Round to 3 decimal places. A regression was run to determine if there is a relationship between hours of study per week (:0) and the final exam scores (3;). The results of the regression were: y=ax+b a=5.@2 b=34.71 r2=0.808201 r=0.899 Use this to predict the final exam score of a student who studies 12 hours per week, and please round your answer to a whole number.[:] The following is data for the first and second Quiz scores for 8 students in a class. First Quiz (Q1) Second Quiz (Q2) 13 12 18 15 19 18 21 21 24 20 26 24 29 24 30 28 Plot the points in the grid below, then sketch a line that best fits the data. Q2 28 24 20- 16 12 8 4 01 8 12 16 20 24 28 Clear All Draw: AVO . Use the line above to predict the value of the second quiz score if a student had a score of 14 on the first test. (Please enter a whole number)