In a recent study on gender differences in education a sampl

In a recent study on gender differences in education, a sample of 7 boys had a mean score of 18.5 and a standard deviation of 4.1 on a Standardized Math Test. A sample of 11 girls had a mean score of 19.9 and a standard deviation of 3.6 on the same test.

What is the t-statistic for this data? (Use the sample of boys as Group 1.)

t statistic = (18.5 - 19.9)/square root of 4.1^2/7 + 3.6^2/11 = -.7400