In: Statistics and Probability
A continuous probability density function (PDF) f ( X ) describes the distribution of continuous random variable X . Explain in words, and words only, this property: P ( x a < X < x b ) = P ( x a ≤ X ≤ x b )
For any continuous random variable the probability that x=a or x=b is zero.There is no defined probability for continuous variables at any given fixed point. So, equality sign does not make any difference in the probabilities.
Therefore both given probabilities are same.