Suppose that the average wekly wage for women in the US is a

Suppose that the average wekly wage for women in the US is around $740 while the average weekly wage for men is around $900. Suppose that the respective sample sizes are 1000 each and the standard deviations are $300 and $450. To test for the equality of the wages for the two populations what is the test statistic? Answer to two decimal places. Hint: your number should be negative.