Below find a set of times (in weeks) to hospitalization for persons with a diagnosis of schizophrenia who have been randomized to standard therapy (Trt=0) or a new drug treatment (Trt=1). A plus sign indicates censoring that we will assume to be independent of disease.

Trt=0: 6 8 11+ 13 16 16 19 21+ 22+ 28 28+ 29 31 35 40+ 41+ 41+ 59+ 86+ 132+ Trt=1: 6 9+ 9 10 11+ 12+ 13+ 17+ 18 19+ 19 20+ 22 24 28+ 31 43+ 48 51+ 57+

1. Assuming a constant hazard (i.e. risk of hospitalization) in weeks 11 through 20, the estimated hazard of hospitalization for the new drug group (Trt=1) during this period is:

a. 2/129 person-weeks

b. 5/129 person-weeks

c. 7/129 person-weeks

d. 2/169 person-weeks

e. 7/169 person-weeks

Please solve fast.