MWTr t-test lab conclusions
October 12, 2009
Each laptop should share a conclusion statement by commenting. Additionally, I would like for you to look at the output from each problem and notice which test is more powerful. Why?
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October 12th, 2009 at 11:46 am
Independent Conclusion Statement:
We fail to reject the null hypothesis with a t(18)=-2.87 at a p>.01. There is not significant difference of the rate of reading after taking a speed reading class.
Dependent Conclusion Statement:
We reject the null hypothesis because there is a significant difference in the reading speeds in the beginning and after the reading class. t(9)=-3.786 and p<.01.
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October 12th, 2009 at 11:55 am
Dependent T-test
There is a significant difference between reading speed before and after the class where t(9)= -3.786 and p.700
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October 12th, 2009 at 11:55 am
Dependent t-test: There is a significant difference between the reading speed before the reading class and after the reading class. T(9)=-3.786 p=.004.
Independent t-test: there is a significant difference between those who took the speed reading class and those who did not take it.
The dependent t-test is more powerful because you are testing the actual orientation of the numbers.
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October 14th, 2009 at 11:21 am
Independent Samples #1
There is a significant difference in psychomotor coordination in subjects who received 10 mg Valium versus those with a placebo t(27)=
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October 14th, 2009 at 11:35 am
Valium test
According to the data, there is no significant difference in psychomotor coordination between the students given the placebo and the students given the valium, t(27)=-2.315, p=.028 at CI=99%.
Rat test
There is a significant difference in activity level between the rats given the amphetamine and those rats that received a placebo instead of the amphetamine, t(10)=5.353, p<.001 at CI=98%
Vitamins!!!!!!
There is no significant difference in maze ability among rats that have an adequate nutritious amount of vitamin A and the same rats that were deprived of vitamin A for six weeks, t(8)=-1.373, p=.207 at CI=95%
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October 14th, 2009 at 11:51 am
Independent
#1. We fail to reject the null hypothesis because there is no significant difference between the humans who received valium for their psychomotor coordination tasks and the humans who didn’t. t(27)= -2.315, p=0.028
#3. We reject the null because there is a significant difference between rats who received amphetamines and those who didn’t in their activity levels. t(10)=5.353, p=.0001
Dependent
#2. We fail to reject the null hypothesis because there is no significant diffference in the performance of the rats who were deprived of vitamin A and those who weren’t.
t(8)= -1.373, p=.207
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October 14th, 2009 at 11:51 am
Independent T- Test #1
There is a significant difference in psychomotor coordination in subjects who received 10mg Valium versus those with placebo t (27)= -2.315, p< .05
Independent T- Test #3
There is a significan difference in levels of activity in rats given 10mg of amphetamines versus rats given a placebo t(10)=5.353, p.05
Completed and submitted by Sean, Brenda, Don, Jennifer… and Cassie
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October 14th, 2009 at 11:52 am
Independent:
1. There is no significant difference between the effects of Valium and the placebo among the subjects, t (27)= -2.3145 < 2.7707, p = 0.028, p 0.01.
3. There is a significant difference between the activity levels of rats that were given d-Amphetamines and those given a placebo, t(10) = 5.3535 > 2.7638, p = 0.
Dependent:
2. There is significant difference for the lack of vitamin A versus having it as a determination of learning a second maze. t (8) = -1.3708 < 2.8965, p = 0.207.
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October 14th, 2009 at 11:59 am
1. There is no significant difference in psychomotor coordination between individuals given valuim and those given a placebo, t(27)= -2.315, p= .028
2. There is no significant difference in the rats performance of those deprived of vit. A t(8)= -1.373, p= .207
3. There is significant difference in the rats activity level when given 10mg of d-amphetamine t(10)= 5.353 p= .000
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