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Leslie is a biologist. She is going to randomly select one animal from her lab to study. There are 5 salamanders, 3 crayfish, and 12 minnows in her lab. What is P{salamanders}.
Answer:
0.25 or 25%
Step-by-step explanation:
Since there are number of salamanders = 5
number of crayfish = 3
number of minnows = 12
total number of animals n = 5 + 3 + 12 = 20
She wants to randomly select an animal and check if it is Salamander or not.
[tex]P(salamanders)=\frac{n(S)}{n}[/tex]
= [tex]\frac{5}{20}[/tex]
= [tex]\frac{1}{4}[/tex]
= 0.25 or 25%
Assuming she is going to randomly select one animal from her lab to study. P(salamander) is 0.25 or 25%.
Using this formula
P(salamander) =salamander/(salamander+crayfish+minnows)
Let plug in the formula
P(salamander)=5/(5+3+12)
P(salamander)=5/20
P(salamander)=0.25 or 25%
Therefore assuming she is going to randomly select one animal from her lab to study. P(salamander) is 0.25 or 25%.
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