Question

What size sample should we draw from a population with standard deviation of 15 to have a sampling distribution standard error of 1.875?1564288

Answer 1

Answer: n = 64

Explanation:

Standard error (SE) of a statistical data is the standard deviation of its sampling distribution.

S.E = r/√n. .....1

Where,

SE = standard error

r = standard deviation

n = number of samples

Given:

r = 15

SE = 1.875

From equation 1, making n the subject of formula:

n = (r/SE)^2

n = (15/1.875)

n = 64