Question

Out of 1,100 discs tested, 13 are defective. Estimate the number of defective discs in a batch of 41,000. Question 2 options:

Answer 1

484.5
so in a batch of 41,000 approximate 484 will break down


hope this helps<3

Answer 2

Answer: 484.5

Form your proportion. Let x be the # of defective discs in a batch of 41000.
1100/13 = 41000/x

Solve for x by cross-multiplying.
1100/13 = 41000/x
1100x = (13)(41000)
1100x = 533000
x ≈ 484.5