Question

A flooring company produces tile in batches of 36. when performing a quality-control analysis, the company tests 4 pieces of tile per batch. in order to test its quality control procedures, a batch of tiles with 6 defective tiles is tested. what is the probability that no defective tiles are selected?

Answer 1

9.26%
total tiles 36,
4 will be test so probability of testing 4/36
non defective =30

probability of testing non defective 4/36 x 30/36 x 100=
9.26%