The phrase "changes are warranted" is correct and usable in written English.
You can use it when making a suggestion or recommendation that certain changes should be made. For example, "Given the new information, I believe changes are warranted in order to ensure accuracy and transparency."
The commission typically seeks public comments to help determine if a rule remains relevant, and whether any changes are warranted.
Ultimately, whether significant changes are warranted should depend on whether the central bank's interventions in fact aggravated the recent crisis, as they aggravated the crisis of the 1930s.
Officials said they will wait a few weeks to determine whether changes are warranted at the appointment stations, including whether to begin turning away walk-ins.
In the meantime, the N.H.L. seems to be taking the stance that the current epidemic is an unfortunate statistical coincidence and that no policy changes are warranted.
Further studies on site-specific effectiveness of ATP/adenosine on intestinal permeability changes are warranted.
Further studies investigating the anti-NB effects of agents capable of reversing these epigenetic changes are warranted.
And Random House agreed that significant changes were warranted in Jeffrey Toobin's "Vast Conspiracy," another Clinton book, to correct factual errors.
That same year, the Board of Regents, the Smithsonian's independent advisory board, called for an independent assessment of Smithsonian research to see what changes were warranted; the ensuing report's recommendations led to changes that helped restore morale and get the scientific programs back on track (Science, 27 February 2004, p. 1283).
Given the continued reliance on chemotherapy, a greater understanding of the occurrence of these population changes is warranted.
