As the newly assigned environmental health and safety (EHS) manager,

 

As the newly assigned environmental health and safety (EHS) manager, you have been asked to conduct several calculations that will assist the plant manager in making some safety-related decisions. You are to conduct the calculations and provide the results in a three-page project report using the  Unit II Consulting Report template .

Scenario #1: The plant manager is considering the installation of a second tank into an existing containment dike with a capacity of 175,000 gallons. (Note: 1 U.S. gallon = 0.1337 cubic feet). The existing tank in the containment measures 15 feet in diameter and 12 feet in height. The second tank being planned measures 20 feet in diameter and 40 feet in height. State law requires that the dike hold at least 125% of total container capacity. Therefore, you must total all containers in the containment.

Scenario #2: The plant manager has asked you to calculate the mean, mode and median of the following data set, which is the measured reach distances on the bag reclaiming area:

28, 23, 27, 29, 28, 26, 25, 30 and 24 (All measurements are in inches)

Scenario #3: The plant manager is preparing a presentation that includes the last three years of injuries which totaled 14. You have determined that in the past three years there 7 of the 14 were hand injuries. Previous projections had indicated that under normal conditions, only four hand injuries were expected and 12 other injuries were expected. The remaining injuries were due to other causes. Calculate the chi-square value and discuss whether there was a significant difference in observed data vs. the expected data. Also discuss how the process of hypothesis testing might prove helpful to the safety professional.

Where

o = 7 hand injuries and 7 other injuries

e = 4 expected hand injuries and 12 other injuries

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