Really?
I may be wrong, but I thought we are trying to show that reincarnation DOES take place?
Like the null hypothesis would be that the world is flat.
You then have to work to show that the null hypothesis is wrong, but showing that it is in fact round.
Nope - that the world is flat isn't a null hypothesis.You need to understand that the 'null hypothesis' has a specific meaning that involves measuring things and then using statistical tests.
For example: 'there will be no significant difference in the mean weight of 5th year pupils in School A compared with 5th year pupils in School B' is a null hypothesis, and from that measurements would taken and analysed to see if the data supported the no difference claim, where 'significant' means calculating the risk of random chance, where the convention is that this should be less than 5%.
The usual approach is for a researcher to show the null hypothesis to be wrong and that there is a significant difference, where this is usually in favour of an alternative hypothesis. There is then the risks of Type 1 errors (rejecting the null when it should be accepted) and a Type 2 (accepting the null when it should be rejected).