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由于正态分布在自然现象、生产和生活实际中广泛存在,且在概率和统计中占有重要的地位。随着新课程改革的推广和深入,各地的高考和调研试题中关于正态分布的考查逐渐成为热点,主要题型和考查方式如下:考向一:考查对正态密度曲线的理解例1设随机变量X服从正态分布N(μ,σ~2),且P(x≤c)=2P(x>c)=p,则
Because the normal distribution exists extensively in natural phenomena, production, and life reality, it occupies an important position in probability and statistics. With the promotion and deepening of the new curriculum reform, examinations on normal distribution in college entrance examinations and research questions have gradually become hot spots. The main questions and examination methods are as follows: Exam to one: Examination of the understanding of the normal density curve. The random variable X obeys the normal distribution N(μ,σ~2) and P(x≤c)=2P(x>c)=p.