5. Consider a generalization of the B-tree with minimum fullness factor f=3. Determine: (i) the mean storage utilization E(p) (ii) the standard deviation of the storage utilization sd(p) (iii) (iv) (v) the probability that the storage utilization lies between 80% and 90%; i.e. Prob [0.8 p0.9]. the median of the storage utilization and compare it with the mean a general expression of the median for a tree with arbitrary minimum fullness factor f