Your marketing research department estimates that the log-linear demand function for your product is: In Q = 8.2 - 16 In P The standard error of the coefficient for In P is 0.3, and the 95 percent confidence interval runs from - 2.2 to - 1.0. At a price of $30, the predicted price elasticity of demand is equal to The 95 percent confidence interval for the elasticity runs from to