9.90 CI and test Refer to the previous exercise.

a. For which significance levels can you reject H0?

(i) 0.10, (ii) 0.05, or (iii) 0.01.

b. Based on the answers in part

a, for which confidence levels would the confidence interval contain 500?

(i) 0.90, (ii) 0.95, or (iii) 0.99.

c. Use part a and part b to illustrate the correspondence between results of significance tests and results of confidence intervals.

d. In the context of this study, what is (i) a Type I error and (ii) a Type II error?