Answer:
B
Step-by-step explanation:
Answer:
1,2,4,5,10,20
Step-by-step explanation:
1*20
2*10
4*5
These are the factors of 20
Answer:
-7, 1, 9, 17
Step-by-step explanation:
- F1=4*4+9=-16+9=-7
- F2=4*2+9=-8+9=1
- F3=4*0+9=0+9=9
- F4=4*2+9=8+9=17
Answer: choice A
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Work Shown:
P(TV) = (number who watch tv)/(number total)
P(TV) = 30/100
P(TV) = 0.30
P(Girl) = (number of girls)/(number total)
P(Girl) = 55/100
P(Girl) = 0.55
P(TV)*P(Girl) = 0.30*0.55 = 0.165 which rounds to 0.17
We'll use this value later. So let's call this M = 0.17
Look in the "girl" row and "tv" column. The value 17 is here.
This is out of 100 people total, so
P(TV and Girl) = 17/100 = 0.17
Call this value N = 0.17
Because M = N = 0.17 approximately, this means that the two variables "TV" and "Girl" are approximately independent
So the equation P(TV and Girl) = P(TV)*P(Girl) is approximately true in this example.
This points to choice A being the answer.
