11-31. Refer to the data in Exercise 11-1 on y intrinsic permeability of concrete and x compressive strength. Find a 95% confidence interval on each of the following: (a) Slope (b) Intercept (c) Mean permeability when x 2.5 (d) Find a 95% prediction interval on permeability when x 2.5. Explain why this interval is wider than the interval in part (c)

Chapter 10 --- Testing Hypotheses for Proportions One Proportion Z-test ESP example --- in class n 10 20 30 40 100 300 100 Y 7 12 13 21 42 152 70 p 0.70 0.60 0.43 0.53 0.42 0.51 0.70 Z...