Oil and Gas Prices The average gasoline price per gallon (in cities) and the cost of a barrel of oil are shown below for a random selection of weeks in 2015. oil ($) 72.74 81.22 63.26 55.36 68.19 47.61 Ed Gasoline (S) 2.754 3.083 2.806 2.311 2.464 2.309 Send data to Excel The correlation coefficient for the data is r = 0.857 and a = 0.05. Should regression analysis be done? The regression analysis should not be done. O The regression analysis should be done. Find the equation of the regression line. Round the coefficients to at least three decimal places. y = atbx b Find the cost of gasoline when oil is $57 a barrel. Round the answer to at least three decimal places. When oil is $57 a barrel, gas costs $ per gallon