Question

Consider the random signal x(t) which takes values in the set {a,a} with equal probability. The number of sign changes z(t) of the signal x(t) in a time interval of duration t is a random variable with probability density p(z(t)=n)=et(t)nn! For n0. What is the average number of sign changes of the signal in time interval of duration t? Et

Answer 1

The distribution function of a random variable X is the probability that it is less than or equal to some value, ..... t( ) and x. 2 t( ), at least one of which is an energy signal, is the area.