Final answer:
The percent uncertainty in the weight of the apple bag is ± 8%.
Step-by-step explanation:
The question relates to the topic of uncertainty in measurements, which is a concept in Physics. The percent uncertainty in the weight of the apple bag is ± 8%.
When we talk about the weight of items, there is always some uncertainty associated with the measurement. In this case, the weight of the apple bag is given as 5 lb ± 8%. The ± 8% represents the percent uncertainty in the weight.
If the bag of apples were half as heavy, but the uncertainty in the weight remained the same, the percent uncertainty would still be ± 8%. The percent uncertainty does not depend on the actual weight of the object being measured.