Final answer:
The type of ounce used in pricing precious metals that is heavier than the type used for baseball bats and newborns is the Troy ounce.
Step-by-step explanation:
The type of ounce used in pricing precious metals that is heavier than the type used for baseball bats and newborns is the Troy ounce.
The standard ounce is used as a unit of weight in general and is the smallest unit in the customary system. The Troy ounce, on the other hand, is specifically used in the measurement of precious metals like gold and silver.
For example, gold is sold by the Troy ounce, which is equivalent to approximately 31.103 grams. This is different from the standard ounce used for everyday items like baseball bats and newborns.