Step 2:Visit thenormal probability area indexand find a picture that looks like your graph. Follow the instructions on that page to find the z-value for the graph. The z-valueisthe probability.Tip:Step 1 is technically optional, but it’salwaysa good idea to sketch a graph when you’re...
For example, in a hypothesis test, the absolute value is taken of a test statistic because it defines extremes (tail areas) at both ends of a probability distribution. When deciding to reject or support the null hypothesis, we care if a value falls into one of these tail areas — it ...
Egg Russian Roulette – A Cracking Probability Lesson On Friday morning I was sitting at home having coffee before I left for school, still dissatisfied with my most recent lesson with my usually receptive Year 8 class. I had them first block that morning and felt like I really needed to ...