If the standard deviation of a population is 56 and we want the standard error (the standard deviation of the sample mean) to be 14, then we need to take how many samples?
standard error= standard of population/sqrt(sample size)
56.0
To calculate the number of samples needed, we need to use the formula for standard error:
Standard Error = Standard Deviation / Square Root(N)
Given that the standard deviation of the population is 56 and the standard error we want is 14, we can rearrange the formula to solve for N (the number of samples):
N = (Standard Deviation / Standard Error)²
Plugging in the values:
N = (56 / 14)²
N = 4²
N = 16
Therefore, we would need to take 16 samples to achieve a standard error of 14.