Pop. Mean =87
Standard deviation=8
Sample size=64
Given the population mean, standard deviation, and sample size, you can use this information to calculate the standard error of the mean. The standard error measures the variability or uncertainty of the sample mean.
To calculate the standard error (SE) of the mean, you can use the following formula:
SE = Standard deviation / √Sample size
Using the given values, you can substitute them into the formula to find the standard error:
SE = 8 / √64
SE = 8 / 8
SE = 1
Therefore, the standard error of the mean is 1.