a. You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately p = 0.75. 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? b. You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately 87%. You would like to be 95% confident that your estimate is within 2% of the true population proportion. How large of a sample size is required? c. You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately σ=39.3σ=39.3. You would like to be 98% confident that your estimate is within 2 of the true population mean. How large of a sample size is required?
a. You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately p = 0.75. You would like to be 96% confident that your esimate is within 4% of the true population proportion. How large of a
b. You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately 87%. You would like to be 95% confident that your estimate is within 2% of the true population proportion. How large of a sample size is required?
c. You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately σ=39.3σ=39.3. You would like to be 98% confident that your estimate is within 2 of the true population mean. How large of a sample size is required?
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