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A randomly selected sample of 100 students had an average grade point average (GPA) of 3.2 with a standard deviation of 0.2.

The standard error of the sample mean is:
A. 0.020
B. 0.200
C. 1.600
D. 2.000

User Nneka
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1 Answer

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Answer:

A. 0.020

Explanation:

we calculate the standard error of the sample mean with the formula,


E=(s)/(√(n) ),

with E= standard error of the sample mean

s= standard deviation

n= sample

So,

s= 0.2

n= 100


E=(0.2)/(√(100) ) =(0.2)/(10)=0.02

User Kage
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