You hypothesize that there is a negative positive relationship between minutes spent in training and the number of infractions correctional officers write for persons in prison. You take a sample of correctional officers and review their records to see how many minutes they spent in training and how many infractions they wrote up in a month. You test your hypothesis at .01 level of significance. Below are your data.

Minutes in Training	Number of Infractions
120	15
60	22
180	120
360	45
2400	30
1200	61
4800	10

a. What is the independent variable in this example? What is its level of measurement?

b. Produce a research and null hypothesis.

c. Calculate Pearson's r by hand. You MUST show your work! Test your null hypothesis at a .05 level of significance

d. Are you able to reject your null hypothesis? How do you know?

e. What can you conclude about your research?

f. Would your results change if you tested the null at the .05 level of significance? Why or why not?