I would like to see how this is calculated, please.

A medical researcher says that 80% of U.S. adults think that healthy children should be required to be vaccinated. In a random sample of 200 U.S. adults, 150 think that healthy children should be required to be vaccinated. At 5% level of significance, is there enough evidence to prove that the true proportion is less than the researcher's claim? What is the Null hypothesis (HO); Alternate hypothesis (H1); and the direction of the test? [ Select ] Which distribution is used in this case? [ Select ] What is the critical value? [ Select ] What is the Test Statistic Value? [ Select ] v What is the P-value? |[ Select ] What is the conclusion of the test? [ Select ] V