simple p-value question

[waxydock]

A two-sample t-statistic, for testing H0 : μx = μy against H1 : μx ≠ μy with sample sizes nx = 12 and nx = 13, is computed to be 2.50. The p-value is approximately

the answer is 1/50

i tried

T = Xm/12 - Xf/13
2.5 Xm/12 - Xf/13

im not sure if this is right, this was under two sample binomal tests in my text book.

Anyone tell me how to do it, or what im doing wrong, that would be great.

 

[JakeD]

A two-sample t-statistic, for testing H0 : ?x = ?y against H1 : ?x ? ?y with sample sizes nx = 12 and nx = 13, is computed to be 2.50. The p-value is approximately

the answer is 1/50

i tried

T = Xm/12 - Xf/13
2.5 Xm/12 - Xf/13

im not sure if this is right, this was under two sample binomal tests in my text book.

Anyone tell me how to do it, or what im doing wrong, that would be great.

This question only requires you to find the p-value for 2.50 in a table for the t-distribution. To do that, you'll need to calculate the degrees of freedom.