Provided below are summary statistics for independent simple random samples from two

Provided below are summary statistics for independent simple random samples from two populations. Use the nonpooled t-test and the nonpooled t-interval procedure to conduct the required hypothesis test and obtain the specified confidence interval. 

x(bar 1)=21, s1=2, n1=20, x(bar 2)=26, s2=5, n2=10

Find the test statistic....t=?