A 95% confidence interval has an upper bound of 0.95 and a margin of error of 0.15. What is the sample proportion? Report to two decimal places. Question 23 options: Question 24 (0.5 points) Listen 7.4 #19 lower bound What is the lower bound of the confidence interval? Report to two decimal places. Question 24 options:
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- Upper bound of the confidence interval = 0.95 - Margin of error (ME) = 0.15 Show more…
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Adi S.
Suppose you are conducting a follow-up analysis for a chi-square test. You are interested in the second population proportion. Your sample proportion is 0.25, the standard deviation is 0.115, and the sample size is 12. Calculate the lower bound of the associated 95% confidence interval. Round your answer to 2 decimal places.
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16. What sample size is needed to give a margin of error of ±2% in estimating a population proportion with 95% confidence? We believe the population proportion is about 0.8. 17. Using the confidence interval given, indicate the conclusion of the test and indicate the significance level used. (a) A 95% confidence interval for a mean μ is 12.5 to 17.1. Testing H0: μ = 18 vs Ha: μ ≠18. (b) A 90% confidence interval for a proportion p is 0.62 to 0.80. Testing H0: p = 0.65 vs Ha: p ≠0.65. (c) A 99% confidence interval for a difference in proportions is - 0.10 to 0.20. Testing H0: p1 = p2 vs Ha: p1 ≠p2.
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