Answer:[tex]\frac{7}{12}[/tex]
Step-by-step explanation:
Given
There are integer between 3 and 14 available to be chosen (total 12 integers)
Prime integers among them
3,5,7,11,13 i.e. total of 5 prime integers
So the probability that the number chosen is not Prime
[tex]=1-P\text{(no is prime)}[/tex]
[tex]=1-\frac{5}{12}[/tex]
[tex]=\frac{12-5}{12}[/tex]
[tex]=\frac{7}{12}[/tex]