A business knows that 3% of its orders that are shipped to customers arrive late. The business changes its system for processing orders, and they want to test if the proportion of orders that arrive late has changed. They
take a sample of 500 orders and find that 20-or 4% of orders sampled-arrived late.
Let p represent the proportion of orders that arrive late under the new system.
Which of the following is an appropriate set of hypotheses for their significance test?