Question 9 of 10 Suppose a binomial trial has a probability of success of 0.3 and 1250 trials
are performed. What is the standard deviation of the possible outcomes?
Round your answer to two decimal places.
O A. 12.55
B. 8.22
C. 16.20
D. 10.61

explanation:

step-by-step explanation:

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15