I need a: the function used in calculatorb: equation including values from problem c: the interval found using proper notation d: findings:

15. A travel agent wants to estimate, with 98% confidence, the proportion of vacationers who use an online service or the internet to make reservations for lodging. The estimate must be accurate within 4% of the population proportion. a) How many vacationers must be surveyed? b) If past industry data suggest that 10% of vacationers use an online service or the Internet to make such reservations, how many vacationers much be surveyed