15 The director of a state agency;r believes that the average starting salary for clerical employees in the state is more than $27,000 per year. To test her hypothesis, she has collected a simple random sample of 70 starting clerical salaries from across the state and found that the sample mean is $32,750. State the appropriate null and alternative hypotheses. O HO: |..l a 2?,000 HA: p 4 27,000 0 H0: |..l 2 32,?50 HA: |..l 4 32,?50 0 H0: u 5 2?,000 HA: p > 27,000 0 H0: u 5 32,?50 HA: p > 32,?50