Final answer:
To find the standard deviation of a probability distribution, use the formula o = sqrt(o^2), where o is the standard deviation and o^2 is the variance.
Step-by-step explanation:
To find the standard deviation of a probability distribution, you can use the formula o = sqrt(o^2), where o represents the standard deviation and o^2 represents the variance. The variance can be calculated by finding each deviation from the expected value, squaring it, multiplying it by the corresponding probability, and adding the products together. The standard deviation is then found by taking the square root of the variance.