A Travel Agency Primarily Reserves Flights with Four Major Airlines $\alpha$

Essay

A travel agency primarily reserves flights with four major airlines. The agency would like to know if the true mean price for the four airlines is the same. Below are the prices for flights leaving from the same city travelling to five different destinations. Test the null hypothesis of no difference in the true mean price for the four airlines in a completely randomized design. Use $\alpha$ = 0.05.