Hypothesis testing in experiments

The topic of  is under the Probability and statistics Math Mission. This exercise introduces the idea of inferential statistics and determining whether a certain hypothesis is statistically reasonable.

Types of Problems
There is one type of problem in this exercise:


 * 1) See if result is significant: This problem describes the results from a particular sample. It then goes on to show the results of a number of simulations in a dot plot. The student is asked whether the initial result is statistically significant based on the results of the simulations.Hyptest1.png

Strategies
This exercise is medium to get accuracy badges because the idea of hypothesis testing takes some getting used to if you have not done it before. However, once you understand the speed badges are easy because they can be done quickly.
 * 1) A result is significant if not too many of the simulations so a similar result or one that is more extreme.
 * 2) Find the result from the initial experiment and only read the number, and the comparison (greater or smaller). Then look at the dot plot. If less than 5% of the dots are that extreme or more extreme the result is significant.
 * 3) 5% of 150 is 7.5 and 5% of 100 is 5.