1. Derive the closed form expression of îML, the maximum likelihood estimator of r, that as-sumes the data from a full buffer mentioned above 2. Derive the CRLB corresponding to

the model (89) 3. Use the data above to compute îML 4. Repeat your simulation for 1000 times to compute E{ÎML} E{(ÎML – E{îML})²}