Ans.
Some marketing examples are -
30% extra for the same price ( which is used by chips/crisps manufacturer ) , and to see if theres any change in sale in a positve manner , then it tell's us that our hypothesis worked.
or
An avdertisement where a girl eats a chocolate bar ,this advertisement will be able to sell more products rather than doing the same advertisement with a boy or a man .
To prove this theory is correct , we will do the hypothesis testing .
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