2.19 (Project) In the same vein as in Exercise 2.18, an approxi- mately normal random variable with y = 0, o = 1 is often constructed by adding together 12 independent, uniformly dis- tributed random variables with support [0, 1] and subtracting 6. Construct such a random variable using MATLAB's uniformly distributed rand and check its density function for normality. 2.19 (Project) In the same vein as in Exercise 2.18, an approxi- mately normal random variable with y = 0, o = 1 is often constructed by adding together 12 independent, uniformly dis- tributed random variables with support [0, 1] and subtracting 6. Construct such a random variable using MATLAB's uniformly distributed rand and check its density function for normality