USB 3 Speed with USB 2 & USB 3 Devices Attached to Hub?

If I connect a USB 3.0 hub to a USB 3.0 port on my PC, and plug into the hub both USB 2.0 and USB 3.0 devices, will the USB 3.0 devices run at USB 3.0 or USB 2.0 speeds?

Both USB 2.0 and 3.0 devices can be connected to the hub at the same time. Speeds will not be affected by connecting slower devices with faster devices.