M = 7 n
Divide each side by 7 : M / 7 = n
I’ll would go with C&D
C&D the only answer that makes sense
Answer:
Brailniest
Step-by-step explanation:
0.25k+1.5-k-3.5
-0.75k-2
so you are right
Answer:
The standard deviation of this probability distribution is 1.2.
Step-by-step explanation:
We have that:
P(X = 0) = 0.25
P(X = 1) = 0.3
P(X = 2) = 0.1
P(X = 3) = 0.35
Mean:
Each value multiplied by its probability. So
Variance:
Sum of the squares of the values subtracted from the mean, and multiplied by its probability.

Standard deviation:
Square root of the variance. So

The standard deviation of this probability distribution is 1.2.