We (Values in sample range from 286 to 486) a first-order regression model was fit to the data. Part of the printout follows: Dep Var Predict Std Err Lower 95% Upper 95% OBS SPEED CHIP PRICE Value Predict Predicted Pedrt Residual 39427 286 5099.0 44649 260.768 4987 1 6341 Interpret the interval given in the printout: Select one: We are 95% confident that the average price of all hard drives falls between $3,943 and $54,987. b. We are 95% confident that the average price of all hard drives with 33 megahertz speed and 386 CPU falls between $53,943 and $54,987. c. We are 95% confident that the price of a single hard drive with 33 megahertz speed and 386 CPU falls between $3,943 and $4,987. We are 95% confident that the price of a single hard drive falls between $3,943 and $54,987.