The average cost of a traditional openheart surgery is claim

The average cost of a traditional open-heart surgery is claimed to be, $49,160. If you suspect that the claim exaggerates the cost, how would you set up the null and alternative hypotheses?

Solution

Null hypotheis: The average cost of a traditional open-heart surgery = $49,160.

Alternative hypotheis: The average cost of a traditional open-heart surgery < $49,160.