suppose that Z represent a standard( tabled) normal random variable.find the P(Z2.25) 相关知识点: 试题来源: 解析 由题意,随机变量Z服从标准正态分布, 因此P(Z<-2.25 or Z>2.25)=1-P(-2.25 一般地,计算此概率,需查标准正态分布表,查得P(Z<2.25)=0.9878; 于是P(Z<-2.25 or Z>2.25)=2[1...
正态分布问题suppose that Z represent a standard( tabled) normal random variable.find the P(Z2.25)
Statistics - Standard normal table - Z is the standard normal random variable. The table value for Z is the value of the cumulative normal distribution at z. This is the left-tailed normal table. As z-value increases, the normal table value also increase
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A normal distribution is defined by the following formula: {eq}f(x) = \frac{1}{\sigma \sqrt{2\pi }}e^{-\frac{1}{2}(\frac{x-\mu }{\sigma })^{2}} {/eq}, where: f(x) is the probability density function x is a random variable {eq}\sigma {/eq} is the standard deviatio...
The standard normal distribution table is a compilation of areas from thestandard normal distribution, more commonly known as a bell curve, which provides the area of the region located under the bell curve and to the left of a givenz-score to represent probabilities of occurrence in a given ...
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Standard Normal Table (Summary) A table of values for the cumulative distribution function (CDF) of the standard normal distribution. The standard normal distribution has a mean of 0 and a standard deviation of 1. This table shows the probability that a standard normal variable will be less tha...
Use Z-table to find the probability P(Z<−1.32), where Z follows standard normal distribution. Z Score: The Z score is also known as the standard normal variable. The sum of all the Z scores in the standard normal distribution is equal to zero. So, th...