Concept explainers
To identify: The sample and suggest a population for which it is selected. State whether the sample is biased or unbiased, if unbiased, classify the sample as simple, stratified, or systematic.
Answer to Problem 38SR
The sample is unbiased and systematic random sample.
Explanation of Solution
Given information:
To check the quality of the books being manufactured, an inspector checks every 50th book that comes of the line.
Calculation:
Here, sample will be every 50th book that comes off the line and population will all books that comes off the lie.
Since, the books are same and every 5th book is getting selected as random. Therefore, the sample is unbiased.
Also, since the books were selected according to an interval, that is, every 50th book so, the sample is systematic random sample.
Hence,
The sample is unbiased and systematic random sample.
Chapter 12 Solutions
Algebra 1
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