AP Statistics / Mr. Hansen 3/3/2005

Name: _________________________

Submitted	Conclusion	Comments
Wed., 7:38 p.m.	There is very weak evidence (n=50, z=1.16, P=.00000001535...) that the 5 pound difference in Milton’s bench press performance is statistically significant.
Wed., 7:49 p.m.	In class, we established that the alternate hypothesis was true in our SRS. The second round of lifting had a higher mean than the first round of lifting. We can conclude that a mean rise of about 5 pounds is signifigant showing a slight raise after Milton’s dietary change.
Wed., 10:31 p.m.	The low P-value provides strong enough evidence to reject the null hypothesis.
Wed., 10:31 p.m.	There is weak evidence that the Creatine supplement that Milton took improved his bench press. In other words, there is very weak evidence that m1 does not equal m2, or that m2 is greater than m1 from the given findings: t=-1.602, p=1.53, with a 50 trial run in each scenario.
Wed., 10:38 p.m.	There is very weak evidence (n = 50, t = -6, = .2469, p = 10^-7) that a creatine diet helped Milton become “more jacked.”
Wed., 10:54 p.m.	There is extremely weak evidence (n=50, t= -6, p hat = .2469, p=10^-7) that Milton has really improved his mean bench press weight after his dietary change.
Thurs., 12:11 a.m.	There is very strong evidence supporting H0 (t=-6.0201...,P=1.5353 times ten to the negative 8, df=97.49186).
Thurs., 12:40 a.m.	The data and calculations shows that Milton has improved his bench press weight after his dietary change.
Thurs., 8:13 a.m.	We are 95% confident that the true mean of Milton’s bench press is 205 +/- .8505. This is statistically significant because this shows that Milton’s increase could not be attributed to chance alone and it is most likely that the creatine did increase his bench press weight.