Researchers are looking at whether or not silicone implants cause breast cancer. They are 80% confident that their sample size of 250 will detect a difference in breast cancer rates, if in fact one does exist. What does this 80% confidence represent?

A. The false-positive rate

B. An alpha error rate of 80%

C. The false-negative rate

D. A beta error of 80%

E. The power of the test


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