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3. HYPOTHESIS TESTING. [25 pts.] One of the undersecretaries of the Department of Labor and Employment (DOLE) claims that the average civil engineer is earning more than Php 18,000 monthly. A sample of 19 civil engineer's salary has a mean of Php 17,350 and a standard deviation of Php 1,230. is there enough evidence to reject the undersecretary's claim at o = 0.01? Please follovv the proper 5step format for your solution. 1. NORMAL DISTRIBUTION. [15 pts.] It is measured that the average time vehicles travel from San Marino to San Vicente is 84.5 minutes with a standard deviation of 4.2 minutes. Find the probability that a vehicle from San Marino will arrive in San Vicente with a travel time between 58.6 minutes to 72.3 minutes. (Draw a box around your final answer.)