In a study of government financial aid for college students, it becomes necessary to estimate the percentage of full-time college students who earn a bachelor's degree in four years or less. find the sample size needed to estimate that percentage. use a 0.04 margin of error and use a confidence level of 95%. complete parts (a) through (c) below. a. assume that nothing is known about the percentage to be estimated. nequals nothingin a study of government financial aid for college students, it becomes necessary to estimate the percentage of full-time college students who earn a bachelor's degree in four years or less. find the sample size needed to estimate that percentage. use a 0.04 margin of error and use a confidence level of 95%. complete parts (a) through (c) below. a. assume that nothing is known about the percentage to be estimated. nequals nothing