Statistic

7. Assume that blood pressure readings are normally distributed with u = 120 and q = 8. A blood pressure reading of 145 or more may require medical attention. a) Graph the distribution for this variable. Scale the x-axis. b) In what interval would you expect the central 68% of blood pressures to be found? c) What percent of people have a blood pressure reading greater than 145? d) What is 20" percentile for the blood pressures