State the null hypothesis Ho and the alternative hypothesis

State the null hypothesis H_o and the alternative hypothesis H_a that would be used for a hypothesis test of the following:

The mean weight of packages shipped on Air Express during the past month was less than 25.8 lb.

I need to see all steps please.

Solution

Note that the claim goes to Ha (alternative hypothesis).

Also, note that the null hypothesis is the exact opposite of the alternative.

Here, the claim is that the mean is less than 25.8 lbs.

Thus,

Ho: u >= 25.8 lbs
Ha: u < 25.8 lbs [ANSWER]