The income of males in each state of the United States, including the District of Columbia and Puerto Rico, are given in table #9.3.3, and the income of females is given in table #9.3.4 ("Median income of," 2013).Is there enough evidence to show that the mean income of males is more than of females?Test at the 1% level.

Table #9.3.3: Data of Income for Males Table #9.3.4: Data of Income for Females $41,317 40,235 40,500 $31,233 33,745 548,74 $31,274 22,117 $35,301 40,959 __ $35,484 32,315