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

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Business

Hugh Weiss

10 June, 09:55

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

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Christina Hutchinson · Answer 1

D. All the phones produced during the day in question

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.