N.Y.C. says 3 percent of its coronavirus tests reveal infections. Why does the state disagree?

A 3 percent positive rate in coronavirus testing is a critical threshold for New York City. It is the point at which the mayor shut down public schools last week. The governor says that a sustained 3 percent level in the city will result in banning indoor dining, closing gyms and hair salons, and placing a 25-person cap on attendance at houses of worship even as the holidays approach.

source https://www.nytimes.com/2020/11/22/us/nyc-says-3-percent-of-its-coronavirus-tests-reveal-infections-why-does-the-state-disagree.html