The complete question in the attached figure N 1
we know that
The formula for Sample Standard Deviation is indicated in the attached figure N2
n in this problem is 4 <span>and Yuri had to divide in the formula by 3 </span>
therefore
the answer is
Yuri divided by n instead of n -1
we know that
The formula for Sample Standard Deviation is indicated in the attached figure N2
n in this problem is 4 <span>and Yuri had to divide in the formula by 3 </span>
therefore
the answer is
Yuri divided by n instead of n -1