For a hypothesis comparing two population means H0 1 2 what

For a hypothesis comparing two population means, H₀: ?₁ ? ?_2, what is the critical value for a one-tailed hypothesis test, using a 5% significance level, with both sample sizes equal to 13? Assume the population standard deviations are equal.

Solution

Degree of freedom =(13-1)+(13-1)=24

From t table ,

t_critical=+2.064