One of the undersecretaries of the Department of Labor and Employment (DOLE) claims that the average salary of a social worker is P18,000. A sample of 16 social workers' salaries has a mean of P1 7,150 and a standard deviation of P1,150. is there enough evidence to support the undersecretary's claim at o: : 0.01? STEP 1: Claim: The mean salary of a social worker is [a]. Ho: The mean salary of a social worker is [b] . Ha: The mean salary of a social worker is [c] . STEP 2: Type of test: [d] Critical valuefs: [e] a : 0.01