Multiselect To evaluate the defect rate of its lenses, a camera lens
manufacturer tests every
100th lens off the production line. Out of
1,000 lenses tested, one
lens is found to be defective. The manufacturer
concludes that 3
lenses out of 3,000 will be defective. Select all of the
statements
that are true about the sampling method.
This scenario is a systematic random sample.
The sampling method is biased.
The inference is valid.
This scenario is a convenience sample.
The sampling method is unbiased.