Given the following tasks in an internet business context, determine which are suitable for forecasting using Linear Regression, Logistic Regression, or neither:
- Task I: Estimating the revenue impact of a new marketing campaign.
- Task II: Predicting whether a new user will make a purchase within their first month of registration.
- Task III: Calculating the likely customer lifetime value based on their purchase history and engagement data.
- Task IV: Assessing the probability of a transaction being fraudulent based on transaction attributes and user history.
Match each task with the appropriate forecasting method.