Tag null hypothesis

Motivation Suppose you have a population with known $\mu$ and $\sigma$. You then take a sample (perhaps not randomly) and discover...

Posted by Beetle B. on Tue 18 July 2017

For a Poission distribution with large $n$, use $Z=\frac{\overline{X}-\lambda }{\sqrt{\lambda /n}}$ (i.e. $\lambda$ instead of $S$). It...

Posted by Beetle B. on Tue 18 July 2017

Things you should think about: What are the implications of your choice of $\alpha$? How much did intuition play a role in deciding...

Posted by Beetle B. on Tue 18 July 2017

The p-value is the smallest significance level (i.e. $\alpha$) at which $H_0$ would be rejected. So if $p\le {\alpha }^{\prime }$, you reject...

Posted by Beetle B. on Tue 18 July 2017

Let $X$ be the number of successes. If \(n<

Posted by Beetle B. on Tue 18 July 2017

Steps to Carry Out The Experiment Identify the parameter of interest. Determine the null value and state the null hypothesis. State the...

Posted by Beetle B. on Tue 18 July 2017

The null hypothesis ($H_0$) vs the alternative hypothesis ($H_a$): The null hypothesis is assumed to be true (default). The...

Posted by Beetle B. on Sun 16 July 2017