The function rnorm() generates normal random numbers. For instance, rnorm(10) gives a vector of 10 random standard normal values. Generate 20 standard normal values, and store them as x. Then obtain sub-vectors of (i) the entries in x which are less than 1; (ii) the entries between 1 2 and 1; (iii) the entries whose absolute value is larger than 1.5; (iv) the entries in x which are outside the interval (1.2,1.2)