Answer:
Standard deviation of the population is 2.4
Step-by-step explanation:
Finishing times of 6 participants in 200 meter dash has been given as 27, 28, 27, 25, 24, 31.
We have to calculate the standard deviation of the population formed by these timings.
Formula of standard deviation is
where = standard deviation
= mean of the data
n = number of scores in the sample
Mean of given data =
=
= 30
Now
= 2.236 ≈ 2.24
Therefore, standard deviation of the given data is 2.24
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Answer:
answer is 6x^2+17x+12
Step-by-step explanation:
3x(2x+3)+4(2x+3)=6x^2+9x+8x+12=6x^2+17x+12
12
Square of 13 equals 169
Square of 5 equals 25
169-25= 144
144 square root equals 12
I say A. because all the sides are the same.