If 300 mice in a mouse colony are born in January and 150 of them are still alive in September, what is the survivorship rate of these mice from January to September?
A) 0.15
B) 0.30
C) 0.45
D) 0.50
E) 0.60

Question

Quizplus · Accepted Answer

The survivorship rate is calculated by dividing the number of individuals alive at the end of the period (150) by the number initially present (300), which gives 0.50 or 50%.

If 300 Mice in a Mouse Colony Are Born in January