2.2 Rick learns that 67.95% of students scored higher than he did on a test that is known to produce normally distributed scores having a mean of 73 and a standard deviation of 6.86. What score did Rick get on the test? (Please, give your answer to exactly five decimal places) 2.3 Statistics students in Quebec Universities score 81.44 on average on a test of basic math ability. The standard deviation of the test scores is 18.222. If we choose 12 students at random and give them the test, what is the exact probability that the mean of these 12 scores will be 77.84 or lower? (Please, give your answer to exactly five decimal places.) 2.4 Statistics students in Quebec Universities score 81.44 on average on a test of basic math ability. The standard deviation of the test scores is 18.222. If we choose 12 students at random and give them the test, what is the exact probability that the mean of these 12 scores will be between 65 and 84.25? (Please, give your answer to exactly five decimal places.) 2.5 Systolic blood pressure is normally distributed in adult Canadian males. The distribution has a mean of 101.26 and a standard deviation of 11.25. What two values of blood pressure enclose the central 95% of this distribution? (Please give your answer to exactly five decima