Question

You are a space alien. You visit planet Earth and abduct 97 chickens, 47 cows, and 77 humans. Then, you randomly select one Earth creature from your sample to experiment on. Each creature has an equal probability of getting selected.

Create a probability model to show how likely you are to select each type of Earth creature.
Input your answers as fractions or as decimals rounded to the nearest hundredth.

Chicken estimated probability:
Cow estimated probability:
Human estimated probability:

Answer 1

Chicken=97/221=0.44

Cow=47/221=0.21

Human=77/221=0.35

Explanation:

Answer 2

Chicken probability is 97/(97+47+77)=97/221=43.89%
Cow probability is 47/221=21.27%
Human probability is 77/221=34.84%