Answer: 5.272 ounces
Explanation:
Given : The Bright-O Shampoo Factory includes 1.078 ounces of vanilla oil in a 6.35-ounce bottle of shampoo.
i.e. Quantity of shampoo in a bottle = 6.35-ounces
The quantity of vanilla oil in each bottle = 1.078 ounces
Now, the amount of shampoo is NOT vanilla oil :-

Hence, 5.272 ounces of the bottle of shampoo is NOT vanilla oil.