There are 7 observations from a 5-year term life insurance policies. The columns are interpreted as follows: (1) i is the policy number, 1 - 7, and is the age of the insured when the policy was issued. (2) di is the time since issue to when the policy was first observed. (3) ti is the time since issue to when the insured was observed to die. Those who were not observed to die during the five years have _! (4) U; is the latest time since issue at which those who were not observed to die were observed. 5.0 24 di ti 1 26 0.7 2 49 1.0 4.1 3 50 2.1 3.9 4 40 2.9 5 25 0 2.9 6 38 0 7 42 0 4.0 5.0 3.9 (a) How many data points are both left truncated and right censoring in the 7 observations? (b) Assume an exponential model for the time to death since entering this term life insurance policy S(I) = q exp and S(t) = exp 0 Find the MLE in terms of parameter 0 based on the given data set. 5 exp(-6) There are 7 observations from a 5-year term life insurance policies. The columns are interpreted as follows: (1) i is the policy number, 1 - 7, and is the age of the insured when the policy was issued. (2) di is the time since issue to when the policy was first observed. (3) ti is the time since issue to when the insured was observed to die. Those who were not observed to die during the five years have _! (4) U; is the latest time since issue at which those who were not observed to die were observed. 5.0 24 di ti 1 26 0.7 2 49 1.0 4.1 3 50 2.1 3.9 4 40 2.9 5 25 0 2.9 6 38 0 7 42 0 4.0 5.0 3.9 (a) How many data points are both left truncated and right censoring in the 7 observations? (b) Assume an exponential model for the time to death since entering this term life insurance policy S(I) = q exp and S(t) = exp 0 Find the MLE in terms of parameter 0 based on the given data set. 5 exp(-6)