How to write the following as null and alternative hypotheses and decide if they're one tailed or two tailed:

1. The average annual income of asian workers is greater than latin workers. Test this hypotheses using 2 data samples of asian and latin workers.
2. Between 1980 and 2020, there has been an increase in households that are headed by divorced parents. Test this hypotheses using data from 2 households from 1980-2020.
3. The average housewife is smarter than the working man. The mean IQ of the working man is 100.
4. I believe that Canadians are less in support of a nationalized finance system. Test such a hypotheses using 2 samples, one from U.S. and another from Canada.
5. If girls and boys are equally represented in sports, 50% of sportspersons would be girls. Girls are underrepresented in sports.