Question

A manufacturer of cellular phones has decided that an assembly line is operating satisfactorily if less than 0.05​% of the phones produced per day are defective. To check the quality of a​ day's production, the company decides to randomly sample 50 phones from a​ day's production to test for defects. Define the population of interest to the manufacturer. A. The 0.05​% of the phones that are defective B. The 50 phones sampled and tested C. The 50 results of the random testing D. All the phones produced during the day in question

Answer 1

D. All the phones produced during the day in question

Step-by-step explanation:

Population of interest is the population that conclusions are made for. The population can be objects, people, or measurements.

A sample is drawm from this population and tested for a particular characteristic. The result is now used to draw conclusions about the population of interest.

On this case the population of interest is all the phones produced in a day, the sample is the 50 phones selected for testing.

The characteristic tested is defects less than 0.05%. If the sample shows that defects are less than 0.05% then it is concluded that the population is okay.