Answer:
Step-by-step explanation:
Mean = 0.53*23.7% + 0.25*12.7% + 0.22*(-0.112)= 15.71%
standard deviation= sqrt(0.53*(23.7%-15.71%)^2 + 0.25*(12.7%-15.71%)^2 + 0.22*(-0.112-12.40%)^2)= 8.40%
Answer:
x=9y/2-25
y=2x/9+50/9
Step-by-step explanation:
The least is 2000 and the greatest is 2005 so the difference is 5 because 2000+5=2005 !!! Hope its helpful