Answer
Yes, see explanations.
Work Step by Step
Given $p=0.17, n=220, \hat p=0.28, \alpha=0.05$
a. State the hypotheses and identify the claim.
$H_o: p\leq0.17$
$H_a: p\gt0.17$ (claim, right tail test)
b. Find the critical value(s).
$z_c=1.645$
c. Compute the test value.
$z=\frac{0.28-0.17}{\sqrt {0.17\times0.83/220}}=4.34$
d. Make the decision.
Since $z\gt z_c$, we have enough evidence to reject the null hypothesis and support the claim.
e. Summarize the results.
At a= 0.05, there is sufficient evidence to conclude that the proportion is actually greater.