prop.test() output

[pcc-git]

Need to update the material. prop.test() changed the output to be a Chi-square test statistic (written "X-squared" in the output) instead of the z. It's a lot to drop on the students at this stage. Focus on the process, emphasizing practicality over theory:

1. State Ho and Ha and pick alpha
2. Calculate the test stat (the deviation of our observed data from the null hypothesis)
3. Calculate the probability of observing the test stat (p-value)
4. Make a conclusion

Mention that the Chi-square is just another test stat with a different formula.

Update material