A quality inspector tests 50 bulbs out of a day's production of 5,000. What is the sample?

All 5,000 bulbs made that dayCorrect answerYour answerThe faulty bulbs among the 5,000Correct answerYour answerThe inspector's resultCorrect answerYour answerThe 50 bulbs testedCorrect answerYour answer

Show the answer and explanation

CorrectNot quiteAnswer D

Correct answer: D

The population is every unit we want to know about: all 5,000 bulbs.
The sample is the part actually studied: the 50 bulbs tested.

Worth noting

The 5,000 bulbs are the population.

Concept: Population and sample
Typical timeTypical: 60 s
Your timeYours: —

The rule this testsPopulation and sample

Practise this chapter →

Ten questions from Sampling, Inference & the t-Test, at your own pace.

Practise this chapter →

Ten questions from Sampling, Inference & the t-Test, at your own pace.

Practise this chapter All 70 questions in Sampling, Inference & the t-Test Revise the notes for Sampling, Inference & the t-Test

A quality inspector tests 50 bulbs out of a day's production of 5,000. What is the sample?

Explanation