An education researcher claims that 57% of college students work year-round. In a random sample of 300 college students, 171 say they work year-round. At α = 0.10, is there enough evidence to support the researcher’s claim?

(a) Identify the claim and state H₀ and H_a, 

(b) Find the critical value(s) and identify the rejection region(s), 

(c) Find the standardized test statistic z, 

(d) Decide whether to reject or fail to reject the null hypothesis, and 

(e) Interpret the decision in the context of the original claim.