Answer the questions...no need detail explanation

Question 1

A budget airline wants to estimate what proportion of customers would pay $14.50 for in-flight wireless Internet access. Given that the airline has no prior knowledge of the proportion, how many customers would it have to sample to ensure a margin of error of no more than 4.2% for a 95% confidence interval? A. 543 B. 544 C. 545 D. 542According to a report, more and more parents are helping their young adult children get homes. Suppose 28 persons in a random sample of 64 young adults who recently purchased a home in Sandakan received help from their parents. You have been asked to construct a 95% confidence interval for the population proportion of all young adults in Sandakan who received help from their parents. What is the margin of error for a 95% confidence interval for the population proportion? A. 0.1215 B. 0.1542 C. 0.1838 D. 0.1020Suppose taxi fares from the airport to the city is normally distributed and a sample of seven taxi fares produces a mean fare of $18.97 and a 95% confidence interval of [$18.91, $19.12]. Which of the following statements is a valid explanation of the confidence interval? A. The mean amount of a taxi fare is $18.97, 95% of the time. B. 95% of all taxi fares are between $18.91 and $19.12. C. We are 95% confident that a randomly selected taxi fare will be between $18,91 and $19.12. D. We are 95% confident that the average taxi fare between the airport and the city will fall between $18.91 and $19.12