Question 1
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.
A poll of 1300 voters in one district showed that 55% of them would favor stricter gun control laws. Find the 95% confidence interval for the population proportion favoring stricter gun control laws.
◦ 0.5492 < p < 0.5508
◦ 0.5224 < p < 0.5776
◦ 0.5223 < p < 0.5777
◦ 0.5305 < p < 0.5695
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.
A medical researcher wishes to estimate what proportion of babies born at a particular hospital are born by Caesarean section. In a random sample of 144 births at the hospital, 29% were Caesarean sections. Find the 95% confidence interval for the population proportion.
◦ 0.2144 < p < 0.3656
◦ 0.2365 < p < 0.3435
◦ 0.2067 < p < 0.3733
◦ 0.2837 < p < 0.2963
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World Population Growth
Metric bolt (cap screw) grade markings and approximate tensile strength.
Population and Settlement
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The decay constant of radon-222 is 0.181 d-1. If a sample of radon initially contains 6.00 × ...