3 stats

1. What are the advantages and disadvantages of using confidence intervals as an alternative approach to statistical inference?

2. Hypothesis testing has come under scrutiny and a sense of skepticism over the past few years by experts in all fields where hypothesis testing is utilized. Discuss the pros and cons of hypothesis testing from your viewpoint. Why do you think hypothesis testing can lead to skepticism in general? Remember to cite your resources and use your own words in your explanation.

3. Pick any two variables that you feel may be related and estimate what you think the strength of the correlation coefficient would be for those two variables.  In your response, estimate the value of r.  For example, specify a strong (.7 to .9), medium (.4 to .6), or low (0 to .3) value for r.  The value of the coefficient can be positive or negative.  For example, consider an increase in police patrols in a neighborhood and the number of burglaries that occur in that neighborhood.  I would say that would be a strong inverse relationship with an r value of -0.8; as one (patrols) increases, the other (burglary rate) goes down.  Describe the factors that you think would contribute to why the variables would have the relationship that you estimate it to be.