## Z test for Mean

One sample Z-test for mean In this tutorial we will explain the six steps approach used in hypothesis testing to test hypothesis about the population …

One sample Z-test for mean In this tutorial we will explain the six steps approach used in hypothesis testing to test hypothesis about the population …

$Z$-Test Calculator for single proportion In this tutorial we will discuss $z$-test calculator for testing single proportion with some numerical examples on $Z$-test for testing …

Z-Test for Proportion In this tutorial we will discuss about the step by step procedure of one sample $Z$-test for testing population proportion. Let $X$ …

Confidence Interval for Variance with Examples In this tutorial we will discuss some numerical examples to understand how to construct a confidence interval for population …

Introduction Confidence interval can be used to estimate the population parameter with the help of an interval with some degree of confidence. One such a …

This tutorial covers examples on confidence interval for the population mean when the population standard deviation is unknown. Example 1 A new brand of laptop …

Confidence Interval for Mean Use this calculator to compute the confidence interval for population mean when the population standard deviation is known. Confidence Interval Calculator …

Bonferroni’s Inequality For $n$ events $A_1,A_2,\cdots, A_n$ $$ \begin{equation}\label{bof} P\big(\cap_{i=1}^n A_i\big)\geq \sum_{i=1}^n P(A_i) -(n-1). \end{equation} $$ Proof For $n =2$, $$ \begin{equation*} P(A_1\cup A_2)= P(A_1)+P(A_2) …