Answer
a. 5 and 2.
Work Step by Step
μ (mean) = n*P
n = 25
P = 0.20
μ = 25*0.20 = 5
σ ( std. deviation ) = √[(n*P)*(1-P)]
σ = √[(5)*(0.8)]
σ =√[4]
σ = 2
Therefore, a. 5and 2.
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