A newspaper conducted a statewide survey concerning the 1998 race for state senator. The newspaper took a SRS of n=1200 registered voters and found that 620 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
H0:p=.50
Ha:p>.50
(a) What is the z-statistic for this test?____.
(b) What is the P-value of the test?_____.