When comparing a well-designed muscular strength workout to a well-designed muscular endurance workout, you would conclude that

fewer repetitions with heavier weights would build muscular strength, while less weight and more repetitions would build muscular endurance.

Explanation:

There are two kinds of people who lifts weights one kind of people who want gain muscle weight they grab the heaviest weights and they stick to fewer repeats. Others are those who do not want to gain bulk in their muscles but want to attain endurance they grab lighter weights and performs more repeats.

Generally who performs less repeats with more weights can help in increasing the strength whereas those with more repeats with lighter weights helps in building more endurance.