Question 4 5 pts Let X = the number of siblings for a student at Northwest High School. Suppose we choose someone from the school at random. The probability distribution of X is as follows. X 0 2 3 4 5+ Probability 0.08 0.45 0.32 0.10 0.04 0.01 a) Calculate the mean of X. b) Interpret the mean in this context. c) The standard deviation is 0.98. Interpret this in context