Answer Happy

7.4.8
a) ID the claim and state H0 and Ha
- ID the claim in this scenario.
- Let p be the population proportion of​ successes, where asuccess is an adult in the country who thinks that healthy childrenshould be required to be vaccinated. State H0 and Ha.Select thecorrect choice below and fill in the answer boxes to complete yourchoice
b. Identify the critical​ value(s) for this test.
z0=___
Identify the rejection​ region(s). Select the correct choicebelow and fill in the answer​ box(es) to complete your choice.
c) Find the standardized test statistic z.
d) Decide whether to reject or fail to reject the nullhypothesis and​ (e) interpret the decision in the context of theoriginal claim.
A research center claims that at least 27% of adults in a certain country think that their taxes will be audited. In a random sample of 800 adults in that country in a recent year, 22% say they are concerned that their taxes will be audited. At α=0.01, is there enough evidence to reject the center's claim? Complete parts (a) through (e) below.