1. The distribution of a continuous random variable has a bell-shaped distribution with population parameters mean(p) at the enter of the distribution and standard deviation (a) respectively. Show that the area covered by uto under the normal curve is approximately 68% of the distribution. (10 Marks)

2. It is given that the mean blood pressure in a given community is 120 mmHg with a standard deviation of 5 mmHg. What would be the probability of finding individuals with blood pressure between 125 and 140 mmHg? (Assume Blood Pressure is normally distributed) What proportion of the community would have this blood pressure profile? (10 Marks