Answer:
D
Step-by-step explanation:
The value of z-score for a score that is three standard deviations above the mean is 3.
In this question,
A z-score measures exactly how many standard deviations a data point is above or below the mean. It allows us to calculate the probability of a score occurring within our normal distribution and enables us to compare two scores that are from different normal distributions.
Let x be the score
let μ be the mean and
let σ be the standard deviations
Now, x = μ + 3σ
The formula of z-score is

⇒ 
⇒ 
⇒ 
Hence we can conclude that the value of z-score for a score that is three standard deviations above the mean is 3.
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Answer:
the answer is B
Step-by-step explanation:
it makes the most sense
Answer:
Umm... I don't know.... Sorry.....
Answer:
To find the answer you just have to solve 4(x-3)
Step-by-step explanation:
4(x-3)=4x-12
So B or 4x-12 is correct.