Question: In the population political party affiliation is 30 Republican 55

In the population, political party affiliation is 30% Republican, 55% Democratic, and 15% other. To determine whether this distribution is also found among the elderly, in a sample of 100 senior citizens, we find 18 Republicans, 64 Democrats, and 18 other.
(a) What procedure should we perform?
(b) What are H0 and Ha? 
(c) What is fee for each group?
(d) Compute x Obt-
(e) With a = .05, what do you conclude about party affiliation in the population of senior citizens?

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