Thursday

November 27, 2014

November 27, 2014

Posted by **Anonymous** on Thursday, September 23, 2010 at 8:32pm.

- Psychology -
**PsyDAG**, Friday, September 24, 2010 at 2:40amZ = (mean1 - mean2)/standard error (SE) of difference between means

SEdiff = √(SEmean1^2 + SEmean2^2)

SEm = SD/√(n-1)

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion related to your Z score.

- Psychology -
**Mrs. Nation**, Friday, November 30, 2012 at 7:25pm(a) and (c)

Ho: u(ex) - u(ct) = 0

Ha:u(ex) – u(ct) is not equal to 0

Test stat: t = (38-35) / sqrt[9/20 + 25/30] = 2.6482

p-value = 2*P(t > 2.6482 with df = 48) = 0.0109

Conclusion:

At the 5% significance level, reject Ho because the p-value is less than 5%

**Answer this Question**

**Related Questions**

Psychology - Twenty students randomly assigned to an experimental group receive ...

Statistic - 18. Twenty students randomly assigned to an experimental group ...

sattistics - Twenty students randomly assigned to an experimental group receive ...

Statistics - Twenty (20) students randomly assigned to an experimental group ...

statistics - Twenty (20) students randomly assigned to an experimental group are...

Statistic - Twenty students assigned to an experimental group receive 30 in a ...

English - I am psueo conducting an experiment on 144 freshmen high school ...

Statistic - Twenty students assigned to an experimental group receive 30 in a ...

statistics - 14. Evolutionary theories often emphasize that humans have adapted ...

Statistics - A study in England attempted to determine the "right" method for ...