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:
a) c = 1/15
b) =2/5
c) = 3/5
d) No, it cannot be the PMF of y.
Step-by-step explanation:
We have that

Can you please attach an image so i can answer? Let me know when you do that and i’ll be glad to help!
Answer:
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Step-by-step explanation:
la de da de da la de da de deee sudennly you call my name an I lose my weight and I float up to the sky!
Answer:
make it 90 degree
Step-by-step explanation: