PLEASE SOLVE THIS ASAP AND NEATLY. THANK YOU

Ql. Nationwide 15% of employed wage and salary workers are union members. A random sample of 200 workers showed that 20 belonged to the union. Is there sufficient evidence to conclude that the proportion of union membership differs from 15%? i) What is the variable of interest in this problem? ii} What is the parameter of interest? iii] Test the claim at signicance level of 0.05 using 5-step procedure of hypothesis testing by using critical values and interpret the results. iv) Calculate the p-value of this test and make decision. v} The statistical test you applied in part iii} cannot be applied unless 4 assumptions of Binomial distribution are met. Verify those 4 assumptions related to the above question {Don' t write just the assumptions)