Hello I could use help understanding the z-test statistic and the P-value!

Late payment of medical claims can add to the cost of health care. Suppose 73.4% of the claims were paid in full when rst submitted for one insurance company. The insurance company developed a new payment system in an eflortto increase this percentage. A sample of 250 claims processed under this system revealed That 204 ofthe claims were paid in full when rst submitted. Complete parts a and b below. a. State the appropriate null and alternative hypotheses. Choose the correct answer below. {95's. H51pSD.?34 ails. Hu:zsn.rs4 HA2p>i1TBtl HA: pm: ..1 =:. H0:p2l].?34 -j:.-o. Hu:p=U.TE-4 HA: p