
Concept explainers
Whether each sample is biased, unbiased and describe its type.

Answer to Problem 2CYU
As the homecoming committee surveys one of the classroom .They select any one random classroom from all. The selection is not fixed .As the committee does not favor one result over the other it is called as unbiased sample.
Explanation of Solution
Given:
The theme for the homecoming dance, the homecoming committee surveys one of the class room.
As the committee selects any one random one sample from all and the selection is random hence the sample is unbiased.
Bias of an estimator is basically the difference between the estimator’s expected value and the original value of the framework which is calculated.
The estimator which has a zero bias is called as unbiased. It is a random number which is calculated.
Conclusion:
Hence, as the homecoming committee surveys one of the classroom .They select any one random classroom from all. The selection is not fixed .As the committee does not favor one result over the other it is called as unbiased sample.
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