flow rate y (m3/min) in a device used for air-quality measurement depends on the pressure drop x (in. of water) across the device's filter. Suppose that for x values between 5 and 20, the two variables are related according to the simple linear regression model with true regression line =-. 12 + .095x with σ .025 (a) What is the expected change in flow rate associated with a 1-inch increase in pressure drop? (b) What is the expected change in flow rate associated with a pressure drop decrease of 5 inches? (c) What is the probability that an observed value of flow rate is between .825 and .835 when the value of the pressure drop is 10 inches? (d) Consider making 10 independent observations on the flow rate when the pressure drop is 10 inches. What is the probability that at least 7 of the observations have a flow rate between ,825 and ,835?