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.
Answer:
the answer is 108
Step-by-step explanation:
N=4
Remove the parentheses, move the terms, collect like terms,calculate, divide both sides
Answer:
72 yd
Step-by-step explanation:
12 x 3=36
6 x 6=36
36 + 36= 72
3,141......
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