Q The null hypothesis=H_0 The Alternative hypothesis=H_a (1) The mean number of years Americans work before retiring is 34 (2) At most 60% of Americans vote in presidential elections(3) The mean starting salary for San Jose State University graduates is at least $100,000 per year.(4) Twenty-nine percent of high school seniors get drunk each month.(5) Fewer than 5% of adults ride the bus to work in Los Angeles.
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