Answer the following completely: A. Do what is asked. 1. State the null hypothesis, Ho and the alternative hypothesis, Ha, for the following. a) The mean number of years Filipinos work before retiring is 25. b) At least 70% of the Filipinos vote in presidential elections. c) The mean starting salary for a Bataan Peninsula State University graduates is at least P100,000 per year. d) Thirty percent of high school seniors get drunk each month. e) The mean number of cars a person owns in his lifetime is not more than ten. 2. The National Institute of Mental Health published an article stating that in any one-year period, approximately 12 percent of Filipino adults suffer from depression or a depressive illness. Suppose that in a survey of 100 people in a certain town, seven of them suffered from depression or a depressive illness, Conduct a hypothesis test to determine if the true proportion of people in that town suffering from depression or a depressive illness is lower than the percent in the general adult Filipino population. a. State the null and alternative hypotheses Ho : Ha : b. Is this a right-tailed, left-tailed, or two-tailed test