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 0.4. 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: 0 / 6 part 1 of 6 is it appropriate to use the normal approximation to find the probability that more than 42% of the people in the sample have high blood pressure? (choose one) it (choose one) v appropriate to use the normal curve, since np = 10 and n(1 - p) = (choose one) 10.