Question

From a population with variance 25, a random sample of size 100 is selected and it gave mean 5.
Obtain standard error of sample mean.
A. 0.67
B.
0.5
C. 0.4587
D. None of these
p.s: please explain​

Answer 1

Answer:

0.5

Step-by-step explanation:

se=standard deviation/sqrt n

standard deviation =sqrt(variance)=sqrt(25)=5

se=5/sqrt(100)=5/10=0.5

hope this helps