Question 4 Write a script in R to compute the following probabilities of a normal random variable with mean 16 and variance 9 a. lies between 14.4 and 20.3 (inclusive) #INSERT YOUR ANSWER HERE b. is greater than 21.8 #INSERT YOUR ANSWER HERE c. is less than or equal to 10.5 #INSERT YOUR ANSWER HERE d. is less than 13 or greater than 19 #INSERT YOUR ANSWER HERE