size needed if we have no prior knowledge about the population proportion p. Then find the sample size needed if we have reason to believe that p 0.7. Finally, find the sample size needed if we assume p 0.9. Comment on the relationship between the sample size and estimates of p.

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6.1-HT Hypothesis Test
for a Proportion
6.2-D Distribution of a
Mean
6.2-CI Confidence
Interval for a Mean
6.2-HT Hypothesis Test
for a Mean
6.3-D Distribution of a
6.36 Find the sample size needed to give, with 95% confidence, a margin of error within +3% when estimating a proportion. First, find the sample
size needed if we have no prior knowledge about the population proportion p. Then find the sample size needed if we have reason to believe
that p z 0.7. Finally, find the sample size needed if we assume px 0.9. Comment on the relationship between the sample size and estimates
of p.
Difference in Proportions
Transcribed Image Text:6.1-HT Hypothesis Test for a Proportion 6.2-D Distribution of a Mean 6.2-CI Confidence Interval for a Mean 6.2-HT Hypothesis Test for a Mean 6.3-D Distribution of a 6.36 Find the sample size needed to give, with 95% confidence, a margin of error within +3% when estimating a proportion. First, find the sample size needed if we have no prior knowledge about the population proportion p. Then find the sample size needed if we have reason to believe that p z 0.7. Finally, find the sample size needed if we assume px 0.9. Comment on the relationship between the sample size and estimates of p. Difference in Proportions
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