Question: The flow rate in a device used for air quality measurement depends on the pressure drop x (inches of water) across the devices filter. Suppose

The flow rate in a device used for air quality measurement depends on the pressure drop x (inches of water) across the device’s filter. Suppose that for x values between = and 20, these two variables are related according to the simple linear regression model with population regression line y = 20.12 1 0.095x.
a. What is the mean flow rate for a pressure drop of 10 inches? A drop of 15 inches?
b. What is the average change in flow rate associated with a 1 inch increase in pressure drop? Explain.

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