What is a Null and an Alternative hypothesis?

Like, generally. How do i construct one from a problem? Simple explanation pleaase. :)





**Optional: If you're kind enough, can you please identify the Null and Alternative hypothesis in the experiment?;;





Exerimenting if Santol (fruit) peel is an acceptable alternative instead of using Lanzones peel to create an effective Cockroach Insecticide.|||Well I'm not sure I can explain it well, but a null hypothesis would be something like "there is no correlation between the fruit peel and cockroach death", and the alternative would be "there is a correlation between the fruit peel and cockroach death",





or perhaps null: "there is no difference between the two fruit peels and the death of cockroaches", alternative: "this fruit peel is more effective as a cockroach insecticide than the other fruit peel"





So the null hypothesis will say that any observed results are just down to chance, not because of your variables (fruit peel).





The alternative hypothesis says that the observed results are due to your variables (fruit peel), not just chance.





Hope that helps :)