WeBWorK Standalone Renderer

A newspaper conducted a statewide survey concerning the 1998 race for state senator. The newspaper took a SRS of $n = 1100$ registered voters and found that 570 would vote for the Republican candidate. Let $p$ represent the proportion of registered voters in the state who would vote for the Republican candidate.
We test

$H_0: p = .50$
$H_a: p > .50$

(a) What is the $z$ -statistic for this test?

(b) What is the P-value of the test?

You can earn partial credit on this problem.