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stevenposner

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Question 1

A population proportion is to be estimated from the sample described. Approximate the margin of error for the 95% confidence interval. Round your answer to four decimal places, if necessary.

A  researcher wishes to estimate the proportion of left-handed people among a certain population. In a random sample of 1000 people from the population, 68.3%  are left-handed. Find the margin of error for the 95% confidence interval.
◦ 0.0009
◦ 0.0147
◦ 0.0208
◦ 0.0294

Question 2

A population proportion is to be estimated from the sample described. Approximate the 95% confidence interval. Round your answer to four decimal places, if necessary.

Sample size = 225, sample proportion = 0.9
◦ 0.8973 < p < 0.9027
◦ 0.8333 < p < 0.9667
◦ 0.8600 < p < 0.9400
◦ 0.8717 < p < 0.9283


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Marked as best answer by stevenposner on Jan 18, 2020

sylvia

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stevenposner

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Reply 2 on: Jan 18, 2020
Thanks for the timely response, appreciate it


brbarasa

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Reply 3 on: Yesterday
Excellent

 

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