Final answer:
When a pilot changes the altimeter from 30.11 in Hg to 29.96 in Hg, the altimeter will show a higher altitude, as the device compensates for lower atmospheric pressure by indicating an increased altitude.
Step-by-step explanation:
If a pilot changes the altimeter setting from 30.11 in Hg to 29.96 in Hg, the altimeter will indicate a higher altitude than before. This is because the altimeter measures the pressure of the atmosphere, and when the pressure setting is lowered, it interprets it as a rise in altitude, since pressure decreases with increasing altitude. Standard atmospheric pressure at sea level is generally considered to be 29.92 in Hg, and any change in the altimeter setting adjusts the indicated altitude to compensate for different atmospheric pressures.