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(a) We have said many times that no conclusion can be drawn from one sample alone. But a…

(a) We have said many times that no conclusion can be drawn from one sample alone. But a…

(a) We have said many times that no conclusion can be drawn from one sample alone. But a confidence interval is a conclusion, so it must draw on more information than just one sample. What isthat more information?(b) Suppose  = 0.18. We've seen in several places that “based on this sample we believe p ≈ 18%,” is an unacceptable conclusion. Exactly what does the confidence interval add to this conclusion? After all, a confidence interval is a valid conclusion.