21. Bias is present in the following sample designs. In each case, identify the type of bias involved and
state
whether you think the sample result is lower or higher than the actual value of the population.
a. "Some cell phone users have developed brain cancer. Should all cell phones come with a warning label
explaining the danger of using cell phones?" (3pts)
Answers: 1
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21. Bias is present in the following sample designs. In each case, identify the type of bias involve...
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