A random sample of size n = 14 is selected from a normal population with a mean of 75 and a standard deviation of 9.A second random sample of size n = 7 is taken from another normal population with mean 69 and standard deviation 12. Let X1 and X be the two sample means. Find: (a) The probability that X1 - X2 exceeds 4. (b) The probability that 4.4 X X 5.4. Round your answers to two decimal places (e.g. 98.76). (a) 0.56 (b) 0.05