Answer:
The appropriate alternative hypothesis if he wanted to substantiate his suspicion would be 
Step-by-step explanation:
At the null hypothesis, we test that the mean is equal to a certain value.
At the alternate hypothesis, we test that the mean is different, less than or more than the mean value tested at the null hypothesis.
The historical U.S. mean unemployment insurance benefit was reported to be $238 per week.
This means that the null hypothesis is:

A researcher in the state of Virginia anticipated that sample data would show evidence that the mean weekly unemployment insurance benefit in Virginia was above the national level.
This means that the alternate hypothesis is:

Answer:
27
Step-by-step explanation:
18 divided by 2 is 9
So, 18+9=27
Answer:
ummm there's no question dude but it's good to know that because i never knew that
Step-by-step explanation:
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Answer:
When the ball is dropped on the ground, the potential energy convert into kinetic energy. It had potential energy when it was held in the air waiting to be dropped, and It had kinetic energy when it was dropped because kinetic energy is when it's moving. when you drop it, your moving it.
Step-by-step explanation:
your welcome *bows*