the random variable X, the raw scores of students who took an entrance exam in the past, is normally distributed with a mean of 100 and a standard deviation of 40. Evaluate the following probabilities: a) Probability that a student will get a score greater than or equal to 150 b) Probability that a student will get a score less than or equal to 110 c) Probability that a student will get a score between 40 and 80 d) Probability that a student will get a score between 70 and 160