Final answer:
The alternative hypothesis for the belief that fewer than 25% of medical doctors obtained their degrees from foreign schools is Ha: The percentage is less than 25%.
Step-by-step explanation:
The alternative hypothesis in this situation reflects the hospital researcher's belief that the percentage of medical doctors receiving their degrees from foreign schools is less than 25%. The null hypothesis would be that the percentage is 25% or greater. Therefore, the alternative hypothesis (Ha) can be written as follows:
Ha: The percentage of medical doctors with degrees from foreign schools is less than 25%.