Blood pressure: High blood pressure has been identified as a risk factor for heart attacks and strokes. The proportion of U.S. adults with high blood pressure is 0.2. A sample of 40 U.S. adults is chosen. Use the TI-84 Plus Calculator as needed. Round the answer to at least four decimal places. Part 1 of 5 Is it appropriate to use the normal approximation to find the probability that more than 45% of the people in the sample have high blood pressure? It is not appropriate to use the normal curve, since np 7.6 < and n (1 - p) 30.4 10. Correct Answer: It is not appropriate to use the normal curve, since np=8 < 10 and n (1-p)=32 10. 10