An Assembly Line Is Operating Satisfactorily If Fewer Than 2

Multiple Choice

An assembly line is operating satisfactorily if fewer than 2% of the phones produced per day are defective. To check the quality of a day's production, the company randomly samples 50 phones from a day's production to test for defects. Define the population of interest to the manufacturer.

A) all the phones produced during the day in question
B) the 50 phones sampled and tested
C) the 50 responses: defective or not defective
D) the 2% of the phones that are defective