Continue with the SENIC Project data. Consider the regression of average length of stay on infection risk.

1. (a) Use the Bonferroni method to obtain simultaneous 95% confidence intervals for 0 and 1. Interpret.
2. (b) A researcher suggested that 0 should be 7 and 1 should be 1. Do the data support this expectation? Assess in two ways: (1) by reference to the intervals in part (a); and (2) by reference to a 95% confidence band for the mean function E(Y |X = x) = 0 + 1x. Are your conclusions consistent? Explain.
3. (c) We wish to simultaneously estimate the expected average stay at hospitals with average infections risks x = 2, 3, 4, 5 with 95% family-wise confidence. Use the Bonferroni method to construct the desired intervals. Interpret your results.