Answer:
4
Step-by-step explanation:
The z-score is calculated by the following formula
z=(x-μ)/σ
where
μ=Population mean
σ=Population standard deviation
If the z-score for a specific sample mean is discussed then z-score is computed as
z=xbar-μ/σxbar.
where
μ=Population mean
σxbar=Sample standard deviation
As the population mean and mean of sampling distribution of mean are equal so, μ is used in above equation.
Now, the z-score is given
1.5=xbar-μ/σxbar
σxbar=xbar-μ/1.5.
Also we know that z-score corresponds to a score that is 6 points above mean which means that xbar-μ=6.
σxbar=6/1.5
σxbar=4.
Thus, the required sample standard deviation is 4.
Answer:
(5e)^4
Step-by-step explanation:
F(x) = x (x^3 - x^2 + x + 1)
Answer:
The answer is 
.
Step-by-step explanation:
This is because when you multiply them together you get
, 
, 
, and 
When you add the like terms you get,
Answer:
The answer is B.
Step-by-step explanation:
Solve for x.
-5x + 5 
160 - 10x
Add 10x to both sides, and subtract 5 from both sides.
5x 155
Now, divide by 5.
x 31 is the answer
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