Environmental groups in California are proposing to ban residential natural gas usage. A politician would like to know the population proportion of Californians who support this proposal. In a random sample of 120 Californians, they found that 35 support the proposal to ban residential natural gas usage.

a) Name the distribution used to construct CIs. (Show any conditions that you've checked.)

b) Find the 98% confidence interval for the population proportion of Californians who support the proposal to ban residential natural gas usage.

c) Interpret this confidence interval.