Answer:
b) 65.08
ii) 0.75
Step-by-step explanation:
x(Kg): 62 63 64 65 66 67 68
Frequency(f): 1 5 11 15 10 6 2
xf: 62 315 704 975 660 402 136
b) mean(X) = ∑xf/N = 3254/50 = 65.08
c) x - X : -3.08 -2.08 -1.08 -0.08 0.92 1.92 2.92
(x - X)²: 9.49 4.33 1.17 0.0064 0.85 3.69 8.53
ii) Standard deviation(S.D.): √(∑(x - X)²/N = √(28.0664)/50 = √0.5613
∴ S.D.= 0.75
I am pretty sure it is D.
All the other ones don't affect the second activity...
Hope I helped...
Answer:
Step-by-step explanation:
distance = = , which is approximately 5.65685
Don't know if you already took the test or not but the answer should be
<span>23670 and $15,470.
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All you have to do is add it could be so simple 8$ + $2 + $2400