The consortium, suspecting that the percentage is relatively low decides to apply the following decision rule: if the percentage is actually 15% or more, the consortium will seriously consider negotiating a settlement. However, if the percentage is less than 15%, they will vigorously defend any lawsuit. Use hypothesis testing with Level of significance is 0.05 a. Find Z, p-value and confidence intervals in both case. b. What is Type I or Type II error and does it occur in any of this case? + Case 1

size 1166 resent ads: 145 don't resent ads: 1021

+ Case 2

size 1377 resent ads 190 don't resent ads 1187