Property Value Statistics Please Help!! Statistics* Properties Uniform, Normal, And Exponential Distribution?

Please Help!! Statistics* Properties Uniform, Normal, and Exponential Distribution? - property value statistics

X1 is a random variable distributed uniformly X2 is normally distributed random variable, and X3 is a random variable with exponential distribution. For each of the following statement to tell whether it applies to X1, X2 or X3. Everything is


Mean and standard deviation of X are equal.

The probability that x is equal to the expected value is 0.

The probability that X has two parameters.


Apart from these three states will say that if X1, X2 and X3. I do not understand at all .. Please help