Final answer:
The p-value for a right-tail test for a difference in two proportions is approximately 0.0103 when z = 0.87.
Step-by-step explanation:
The p-value for a right-tail test for a difference in two proportions can be calculated as the area to the right tail of the z-test in a standard normal distribution. In this case, when z = 0.87, the p-value is approximately 0.0103.