You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately p∗=16%p∗=16%. You would like to be 99% confident that your estimate is within 5% of the true population proportion. How large of a sample size is required?
Given that, population proportion ( p* ) = 0.16
margin of error ( E ) = 0.05
A 99% confidence level has significance level = 0.01 and critical value is,
We want to find, the sample size ( n ),
Therefore, required sample size is 357
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you...
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately p = 0.78. You would like to be 99% confident that your esimate is within 4% of the true population proportion. How large of a sample size is required?
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately 35%. You would like to be 99% confident that your estimate is within 1% of the true population proportion. How large of a 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 17%. You would like to be 99% confident that your estimate is within 1% of the true population proportion. How large of a 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 = 0.65. You would like to be 90% confident that your estimate is within 5% of the true population proportion. How large of a sample size is required?
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately 69%. You would like to be 99% confident that your estimate is within 1.5% of the true population proportion. How large of a sample size is required? Hint: Textbook Video [+]
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately p = 72%. You would like to be 99% confident that your esimate is within 5% of the true population proportion. How large of a sample size is required? n= Do not round mid-calculation. Use a critical value accurate to three decimal places.
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately p = 0.11. You would like to be 98% confident that your esimate is within 3% of the true population proportion. How large of a sample size is required? _____
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately p=0.69. You would like to be 95% confident that your esimate is within 2% of the true population proportion. How large of a sample size is required? Hint: Video [+]
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately p = 0.15. You would like to be 98% confident that your esimate is within 2.5% of the true population proportion. How large of a sample size is required? Hint: Video [+] n =
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately p=0.6. You would like to be 96% confident that your esimate is within 4% of the true population proportion. How large of a sample size is required? Hint: Video [+] n-