Question

# Solve by using the strategy Work Backward. A beetle needs to climb out of a crater that is 800 cm deep. It advances 120 cm each day, but is slips back

Sampling distributions
At the end of each day, the beetle climbs a total of $$120 - 90 = 30 cm$$.
Dividing 800 em by 30 cm, we obtain 26.66... which rounds down to 26 days. On the night of the 26th day, the beetle would have climed a total of $$26(30) = 780 cm$$. This means that on the 27th day, the beetle can climb out of the crater since it can climb 120 cm and it only needs 20 cm more.