From their individual interview, Luisa claims that no more than 5% of the garments she sewed did not pass quality check while Isabela claims her to be no more than 3%. During the observation period,...

From their individual interview, Luisa claims that no more than 5% of the garments she sewed did not pass quality check while Isabela claims her to be no more than 3%. During the observation period, Luisa completed 120 garments of which 5 needs to be refined and Isabela completed 90 garments of which 3 needs to be refined

a. Who has the higher probability of telling the truth?

b. The fashion designer implements a salary deduction whenever a seamstress produces 10 subpar garments. Based on the proportion of garments completed by Luisa and Isabela that needed refining and using approximation, what is the probability that each seamstress gets salary deduction before completing her 100th garment?