Question: Consider the following matched samples representing observations before and after an experiment. Assume that sample data are drawn from two normally distributed populations.
![285_Data.png](https://secure.tutorsglobe.com/CMSImages/285_Data.png)
a. Construct the competing hypotheses to determine if the experiment increases the magnitude of the observations.
b. Implement the test at a 5% significance level.
c. Do the results change if we implement the test at a 1% significance level?