10.52 Predicting water quality for an area of 40 km2. Refer to Exercise 10.48.

  1. (a) Find a 95% confidence interval for the mean response corresponding to an area of 40 km2.

  2. (b) Find a 95% prediction interval for a future response corresponding to an area of 40 km2.

  3. (c) Write a short paragraph interpreting the meaning of the intervals in terms of Ozark Highland streams.

  4. (d) Do you think that these results can be applied to other streams in Arkansas or in other states? Explain why or why not.