ty very much You want to obtain a sample to estimate a population proportion. At this point in time, you have noreasonable estimate for the population proportion. You would like to be 99% confident that your estimate iswithin 5% of the true population proportion. How large of a sample size is required?n =Do not round mid-calculation. However, use of a critical value rounded to three decimal places will suffice. Express the confidence interval 82.9 % ± 3.8 % in the form of a trilinear inequality.%

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Algebra: Structure And Method, Book 1

(REV)00th Edition

ISBN:9780395977224

Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Chapter7: Applying Fractions

Section7.2: Proportions

Problem 47WE

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You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately p = 0.68. You would like to be 97% confident that your estimate is within 2.5% of the true population proportion. How large of sample size is required n =
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately p = 0.33. You would like to be 97% confident that your esimate is within 1.5% of the true population proportion. How large of a sample size is required? n =
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You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately p = 0.18. You would like to be 95% confident that your esimate is within 3% of the true population proportion. How large of a sample size is required? Hint: Shouldn't the answer be a WHOLE NUMBER. n =
For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding. A random sample of medical files is used to estimate the proportion p of all people who have blood type B. n USE SALT (a) If you have no preliminary estimate for p, how many medical files should you include in a random sample in order to be 85% sure that the point estimate p will be within a distance of 0.07 from p? (Round your answer up to the nearest whole number.) medical files (b) Answer part (a) if you use the preliminary estimate that about 13 out of 90 people have blood type B. medical files
A large automobile insurance company selected samples of single and married male policyholders and recorded the number who made an insurance claim over the preceding three-year period. Single Policyholders Married Policyholders ni = 412 n2 = 778 Number making claims = 75 Number making claims = 111 a. Use a= 0.05. Test to determine whether the claim rates differ between single and married male policyholders. z-value (to 2 decimals) p-value (to 4 decimals) We cannot conclude that there is the difference between claim rates. b. Provide a 95% confidence interval (to 4 decimals) for the difference between the proportions for the two populations. Enter negative answer as negative number.
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately p = 0.6. You would like to be 99% confident that your esimate is within 2.5% of the true population proportion. How large of a sample size is required? Hint: Textbook Video (+] n =
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