Suppose the population standard deviation is known to be $\sigma = 150$. Calculate the standard error of $\bar { x }$ when $n = 300$ and $N = 1500$.
A) 7.75
B) 6.92
C) 17.32
D) 3.87

Question

Quizplus · Accepted Answer

The standard error of the mean is calculated as $\frac{\sigma}{\sqrt{n}}$. Substituting the given values, we get $\frac{150}{\sqrt{300}} = 7.75$.

Suppose the Population Standard Deviation Is Known to Be σ=150\sigma = 150σ=150

Suppose the Population Standard Deviation Is Known to Be $\sigma = 150$