Answer:
[tex]X \sim N(\mu, \sigma)[/tex]
And from this case we can see that the deviation is given by:
[tex]\sigma = 3[/tex]
Step-by-step explanation:
For this case we have the following notation given:
[tex] X \sim N (5,3)[/tex]
And from this we know that the distribution for the random variable is normal and we know that in general the normal distribution is given by:
[tex]X \sim N(\mu, \sigma)[/tex]
And from this case we can see that the deviation is given by:
[tex]\sigma = 3[/tex]
