According to the WHO MONICA Project the mean blood pressure for people in China is 128 mmHg with a standard deviation of 23 mmHg. Assume that blood pressure is normally distributed. Round the probabilities to four decimal places. It is possible with rounding for a probability to be 0.0000. a) State the random variable. b) Find the probability that a randomly selected person in China has a blood pressure of 116.8 mmHg or more. c) Find the probability that a randomly selected person in China has a blood pressure of 168.2 mmHg or less. d) Find the probability that a randomly selected person in China has a blood pressure between 116.8 and 168.2 mmHg. e) Find the probability that randomly selected person in China has a blood pressure that is at most 70.5 mmHg. f) Is a blood pressure of 70.5 mmHg unusually low for a randomly selected person in China? Why or why not? g) What blood pressure do 75% of all people in China have less than? Round your answer to two decimal places in the first box. Put the correct units in the second box.