"In a population of U = u + d voters, u are undecided but the remaining 0' voters have decided how they will vote. If a simple random sample of 20 voters is taken, what is the chance that there are at least 5 undecided voters and at least 10 who have decided? You can assume that both u and d are greater than 20... The student shows the GSI the following answer and asks if it is right. 215 (Z) (261,.) _ i'iw (Z) (261,.) (2'6) (2'6) 0 If the answer is right, explain the reasoning in detail, including all uses of distributions and the rules of probability. 0 If the answer is wrong, provide the right answer. Also say whether the student's answer is an overestimate or an underestimate, and provide an intuitive explanation