Answer: 0.12 accidents. Step-by-step explanation: The expected value is: EV = ∑pₙ*xₙ where xₙ is the event number n, pₙ is the probability of event xₙ in this case we have: x₀ = 0 accidents and p₀ = 0.935 x₁ = 1 accident, and p₁ = 0.03 x₂ = 2 accidents, and p₂ = 0.02 x₃ = 3 accidents, and p₃ = 0.01 x₄ = 4 accidents, and p₄ = 0.005 Then the expected value is: EV = (0*0.935 + 1*0.03 + 2*0.02 + 3*0.01 + 4*0.05) = 0.12 accidents.
-8/5 is a rational number because in order to be a rational number it must be able to be written as a fraction. -8/5 is a fraction; therefore, the negative does not affect it.
