In a random sample of 500 Houstonians, 400 respondents agreed to pay more in property taxes to develop more green spaces. a) Fine the standard error of the sample proportion who agree to pay more in property taxes.

b) Find the Margin of Error

c) Construct a 90% confidence interval for the proportion of Houstonians who agree to an increase in property taxes

d) What is the probability that in a random sample of 500 Houstonians, 80% will agree to an increase in property taxes, if the actual proportion who agree is 78%?