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Sagot :
Standard error of the of the standard deviation of 2 years with the mean and the sample size of n will be 3
The parameter list is abbreviated (lower value, upper value, μ,
, α / √n
normal cdf: (85,92,90, 15 / √25
= 0.6997
To find the value that is two standard deviations above the expected value 90, use the formula:
value = ux + ( # of STDEVs ( αx / √n )
value = 90 + 2 (15 / √25 )= 96
The value that is two standard deviations above the expected value is 96. The standard error of the mean is
σ / √n = 15√25
= 3.
standard error of the mean is a description of how far that the sample mean will be from the population mean in repeated simple random samples of size n.
To learn more about the standard deviation
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