5] [6 pm] A school ad min istrator is concerned a bout the a mount of credit ca rd d ebt college students have. 5h e wish es to con d uct a poll in order to estimate the percentage of college students who have credit card debt over $2,500. a} An article re ports that the percentage could be 34%. Using this point estimate, what sample site is needed so a 90% confidence interval for the proportion of college studenE with more than $2,500 in credit card debt is within 2.5%? b} If no estimate of the proportion is available, how large would the sample have to be? c} Using the article's reported 34% as a point estimate, if a random sample of 25 students was selected, what would be the proba bilit'h.r that 2 or fewer had more than $2,50 in credit card debt? [Hint Use BINDMBIST}