Number 4 could somebody help me out.
its not urgent im just trying to bring my grade up and i just need some help
ill give brainliest to the correct answer
nobody will answer in mathematics so i came here :)

In 2012 it was reported that 64% of adult americans watch football regularly. you want to know if this percentage has increased. to do this you randomly sample 400 adults from across the united states. you ask all these adults, "do you regularly watch football? " 268 of the adults respond that they do regularly watch football. carry out at alpha =.05 a hypothesis to test your claim. make sure to check all necessary conditions and state your conclusion in the context of the situation

Answer the following question in 3-4 complete sentences. define the following terms: medium technique proportion

Why did david smith burnish the surface of his work cubi xix?