Answer:
The answer is rule 6
Step-by-step explanation:
Answer:
A bag contains:
8 blue balls.
7 green balls.
5 red balls.
The probability that the ball is red would be:
P = Red balls/Total balls = 5/(5+7+8) = 5/20 = 1/4 =0.25
Hope this helps!
:)
Answer:
70.56
Step-by-step explanation:
The variance is the standard deviation squared.
σ² = (8.4)² = 70.56
(6 + 1/4)·4 = (6·4) + (1/4·4) = 24 + 1 = 25
Or, you can convert the mixed number to the improper fraction 25/4 and then multiply by 4 to get 25.