Which expressions are equivalent to -6+4q+(-6q)? A.) -6(q+1) - 4q or B.) 2(q-3) or C.) None of the above

answer: expected value of x = 1.0

step-by-step explanation:

p(x=0) = 0.25

p(x=1) = 0.50

p(x=2) = 0.25

expected value for x = 0×0.25 + 1×0.5 + 2×0.25 = 1.0

answer: for each 3 girls there is 2 boys . 3: 2

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