A newspaper conducted a statewide survey concerning a proposal to raise taxes in order to prevent budget cuts to education. The newspaper took a random sample (assume it is an SRS) of 800 registered voters and found that 256 would vote to raise taxes. Let p represent the proportion of registered voters in the state that would vote to raise taxes. (Round your answers to 4 decimal places, if needed.) 

(a) The standard error for the sample proportion is ______________.

(b) The margin of error for an 89% confidence interval for p is ___________.