Question

In discussing the sample size required for obtaining a confidence interval with a prescribed confidence level and margin of error, we made the following statement: “If we have in mind a likely range for the observed value of p, then, in light of Fig, we should take as our educated guess for p the value in the range closest to 0.5.” Explain why.

OUTPUT Histogram of ˆp for 2000 samples of size 1010 with superimposed normal curve

0.155
0.191
0.227
PHAT
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Hypothesis Testing

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Transcribed Image Text

0.155 0.191 0.227 PHAT