1问题的提出为了真切地了解海南省高中生的数学学习情况,为教师教育提供真实的素材,本人主动申请参加了海南省2010年普通高等学校招生全国统一考试数学试卷的阅卷工作,并有幸参与文科数学第Ⅱ卷第三大题第(19)小题的阅卷工作.该题的内容如下:三、解答题解答应写出文字说明,证明过程或演算步骤.(19)(本小题满分12分)为调查某地区老年人是否需要志愿者提供帮助,用简单随机抽样方法从该地区调查了500位老人,结果如下: 1 Problem Proposal In order to truly understand the mathematics learning of high school students in Hainan Province, to provide real material for teacher education, I volunteered to apply for Hainan Province in 2010 enrollment of national college entrance examination mathematics papers scored and fortunate enough to participate (19) of the second volume of liberal arts math volume marking the work. The contents of the question are as follows: Third, answer the answer should write a text description, proof of the process or calculation steps. Points) To investigate whether elderly people in a certain area need volunteers or not, 500 elderly people were surveyed in the area by simple random sampling. The results are as follows: