A continuous random variable X has expected value pg = 40 and standard deviation O'X = 25. Consider the independent random variables X1, X2, X3, . .. X50 all having the expected value 40 and standard deviation 25 (Remark: They are a random sample of size n = 64 of the LV. X.) _ X +X +X +... X Find the probability P(33 a X E 50) where X = +550