You wish to estimate, with 90% confidence, the proportion of tablet owners who use their tablets daily. Your estimate must be accurate within 2% of the population proportion. No preliminary estimate is available.  Find the minimum sample size needed.

You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable preliminary estimation for the population proportion. You would like to be 99% confident that you estimate 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 56%. You would like to be 99% confident that your estimate is within 2.5% of the true population proportion. How large of a sample size is required? > Next Question

You want to obtain a sample to estimate the proportion of a population that possess a particular genetic marker. Based on previous evidence, you believe approximately 69% of the population have the genetic marker. You would like to be 95% confident that your estimate is within 5% of the true population proportion. Do not round mid-calculation and be careful when you round your answer. How large of a sample size is required? n=

In spite of the potential safety hazards, some people would like to have an Internet connection in their car. A preliminary survey of adult Americans has estimated this proportion to be somewhere around 0.30. Use the given preliminary estimate to determine the sample size required to estimate this proportion with a margin of error of 0.05.

You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately 32%. You would like to be 99% confident that your estimate is within 4.5% of the true population proportion. How large of a sample size is required? Do not round mid-calculation.n =

You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately p∗=22%p∗=22%. You would like to be 95% confident that your esimate is within 4% of the true population proportion. How large of 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 89%. You would like to be 99% confident that your estimate is within 2.5% of the true population proportion. How large of a sample size is required? Do not round mid-calculation.n =