Subject Number	Birth Control Pill	Placebo
1	108	102
2	76	68
3	69	66
4	78	71
5	74	76
6	85	80
7	79	82
8	78	79
9	80	78
10	81	85

What are the degrees of freedom for the t-test you need to conduct (error margin = 0.1)?

What is the absolute value of the test statistic when your using a two-tailed alpha level of .05 (error margin = 0.1)?

What is the absolute value of the sum of the difference scores (i.e D=?; error margin = 0.5)?

What is the sum of squares of the difference scores (error margin = 0.5)?

What is the variance of the difference scores of the difference scores (error margin = 0.5)?

What is the standard deviation of the difference scores of the difference scores (error margin = 0.5)?

What is the standard error of the difference scores (error margin = 0.5)?

What is the absolute value of the mean of the difference scores (error margin = 0.5)?

What is the absolute value of the obtained/observed test statistic (error margin = 0.5)?