A tax analyst says that at least 60% of tax filers are expecting a tax refund. In a random sample of 2494 U.S. tax filers, 56% are expecting a tax refund. At α = 0.05, is there enough evidence to reject the analyst’s claim?

(a) identify the claim and state H0 and Ha,

(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.