If the irs suspects that something is wrong with your taxes that you have filed, they will perform this action.. recall? audit? referendum? due diligence? i'm pretty sure it's the audit but i'm not exactly sure.. in advance! : )

The difference of sample means of two populations is 55.4, and the standard deviation of the difference of sample means is 28.1. which statement is true if we are testing the null hypothesis at the 95% confidence level? a. the difference of the two means is significant, so the null hypothesis must be rejected. b. the difference of the two means is significant, so the null hypothesis must be accepted. c. the difference of the two means is not significant, so the null hypothesis must be rejected. d. the difference of the two means is not significant, so the null hypothesis must be accepted.