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If f(x) = 3-2x and g(x) =1/x+5 to what is the value (f/g)(8)

Successful implementation of a new system is based on three independent modules. module 1 works properly with probability 0.96. for modules 2 and 3, these probabilities equal 0.95 and 0.90. compute the probability that at least one of these three modules fails to work properly.

What is the upper quartile in the box plot?