Answer:
You can use proportions by settling the ratio from the sample equal to the ratio from the population.
Step-by-step explanation:
For Example is 3 out of 50 phones in a sample are defective, then an estimated 60 out of 1000 phones in a population are defective. this can be found by solving the proportion 3/50=x/1000 where x is the estimated number of defective phones in the population.