(2) John Smith experiences an 8-hour noise dose of 120 by spending one hours in Room #1 with a known noise level of 100 dBA and another seven hours in Room #2 with an unknown noise level. (Please keep two decimal places) a) Based on the calculation of 120 noise dose, what is the time permitted in Room #2 with this unknown noise level? hr By using computational formula, what is the corresponding noise level in Room #2? b) What should the maximum noise level be in Room #2 for John Smith to remain within OSHA compliance? dBA Also, what is the time permitted in Room #2 with this noise level? dBA hr

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