Question: A survey of 50 randomly selected adults in a small town asked them if their opinion on a proposed "no cruising" restriction late at night. Responses were coded 1 for in favor, 0 for indifferent, and 2 for opposed, with the results shown in the table.
a. Give a point estimate of the proportion of all adults in the community who are indifferent concerning the proposed restriction.
b. Assuming that the sample is sufficiently large, construct a 90% confidence interval for the proportion of all adults in the community who are indifferent concerning the proposed restriction.