This is the last practice problem I have on my mid-term sheet. Ty for helping me!   Find the size of each sample needed to estimate the difference between the proportions of boys and girls under 10 years old who are afraid of spiders. Assume that we want 98% confidence that the error is smaller than 0.05.

You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately p = 0.73. You would like to be 98% confident that your esimate is within 2% of the true population proportion. How large of a sample size is required?

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 90% confident that you estimate 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 p = 0.85. You would like to be 97% 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. 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 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=

You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately p = 0.23. You would like to be 96% confident that your esimate is within 5% of the true population proportion. How large of a sample size is required?

Below is a research question, please answer the following question.  After it is solved, you can simply replace the highlighted sentences (the format you should follow, please follow the highlighted sentence format) with the correct answer.