Two-sample Difference Between Proportions Z-test
Problem https://youtu.be/_SvoDf7Toi4 https://youtu.be/XWLsrGtLfAo
One-sample Sigma Known z-test for the Mean
Joel, I have not checked all your calculations, but the process you used looks good. I note that this is a problem where you are given a lot of raw data. Which technology did you… One-sample Sigma Known z-test for the Mean
Simple One-sample z-test for the Mean when Sigma is Known
Here is a way to do a simple one-sample z test when we know the population standard deviation sigma. If this was a left tail test as indicated by an < in the alternative hypothesis,… Simple One-sample z-test for the Mean when Sigma is Known
7.4.5 Single Sample Hypothesis Test for a Proportion
Here is the screenshot of the basic StatCrunch solution. [My Excel calculator for running this test is found here.] As always for proportion problems, we have to check first to be sure np and nq… 7.4.5 Single Sample Hypothesis Test for a Proportion
Hypothesis Test for Mean Difference using StatCrunch
I see a lot of students struggle with recognizing what a problem statement is asking them to do. Consider this problem:
What do you get from that reading? I get:Hypothesis Test for Mean Difference using StatCrunch
The Stones at Big Thunder Mountain!
No, not the Rolling Stones, though these stones were rolling. Y’all know I love stats, but this article popped up on my FB feed tonight and I have to share it. It is about some… The Stones at Big Thunder Mountain!