Final answer:
To express the 72.5% ± 5.2% confidence interval as a trilinear inequality, calculate the lower and upper bounds, which are 67.3% and 77.7% respectively. The trilinear inequality representing this confidence interval is 67.3% < p < 77.7%.
Step-by-step explanation:
To express the confidence interval 72.5% ± 5.2% in the form of a trilinear inequality, you need to calculate the lower and upper bounds of the interval. Subtract 5.2% from 72.5% to get the lower bound and add 5.2% to 72.5% to get the upper bound. Thus, the inequality would be:
67.3% < p < 77.7%
These percentages represent the range within which the true population percentage is estimated to lie with a 72.5% level of confidence.