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3. Systolic blood pressure readings are normally distributed with a mean of 121 and a standard deviation of 12. If a person from the population was selected at random, find the probability that their blood pressure is in the acceptable range (between 115 and 135) for athletic activity. (4) a) Label and shade normal distribution curve to model this problem: b) Find the probability that their blood pressure is in the acceptable range (between 115 and 135) for athletic activity. 4. The placement test for a college has scores that are normally distributed with u = 400 and o = 75. If the college admits only the top 15% of examinees, what is the cutoff score on the test for admission? [4] a) Label and shade normal distribution curve to model this problem: b) Find the cutoff score on the test for admission