You want to estimate the proportion of students at your college or university who are employed for 10 or more hours per week while classes are in session. you plan to present your results by a 95% confidence interval. using the guessed value p* = 0.27, find the sample size required if the interval is to have an approximate margin of error of m = 0.03. n =

Asales representative from a local radio station is trying to convince the owner of a small fitness club to advertise on her station. the representative says that if the owner begins advertising on the station today, the club's total number of members will grow exponentially each month. she uses the given expression to model the number of club members, in hundreds, after advertising for t months.