1500 Calorie Menu

An economist conducted a study of elem Virginia. school lunch menus. During the trial period of State, school lunches averaged 863 calories. Economist claimed after the end of trial period, the average caloric content of studies Virginia has decreased significantly.
Set up the null and alternative hypothesis to test the assertion Economist

The null hypothesis is just a restatement of the standard. It was established that school lunches averaged 863 calories, so use L for the average caloric value of school lunch, we say:

Ho: L = 863

The alternative hypothesis is what you believe to be true when you set up a study or experiment, in order:

Ha: L <863