Please solve this question. I have not that much time. Please solve this as early as possible:

Q]. Let x be the number of potential weapons dcteetcd by a metal detector at an airport on a given day. The following table lists the probability distribution of x. -_I__ {a} Calculate the standard deviation for this probability distribution and interpret the result. 3+1 (b) Calculate the probability P(x <: or x> 3) 2 (c) Find PC: 3) 2