= 5. A random variable is normally distributed with a mean of = 50 and a standard deviation of a. Which of the following graphs accurately represents the probability density function? 0=5 A 35 40 45 50 55 60 65 35 0 = 5 40 45 50 55 60 65 35 40 45 0 = 5 50 55 60 65 1 2 3 Select V b. What is the probability the random variable will assume a value between 45 and 55 (to 4 decimals)? c. What is the probability the random variable will assume a value between 40 and 60 (to 4 decimals)? d. SHOW ALL WORK TO RECEIVE BEST ANSWER AND BEST RATE