the random variable x takes on the

the random variable x takes on the values 1, 2, or 3 with probabilities (1+3k)/3, (1+2k)/3, and (0.5+5k)/3, respectively.
(a) Find the appropriate value of k.
(b) Find the mean and variance of x.
(c) Find the cumulative distribution function.

ผลลัพธ์ (อังกฤษ) 3:

The random variable X takes on the values 1, 2, or 3 with probabilities (1 3K) /3, (1 2K) /3, and 5 (0.5K) /3, respectively.
(a), the appropriate value of K Find.
(B), the mean and variance of X Find.
(c), Find the cumulative distribution function.