There are 26 scores in the population.
The standard deviation formula is expressed as;
\(\sigma ^2=\frac{ss}{n-1}\)
Given the following
\(\sigma^2 = 4\\ss=100\)
n is the number of scores
Substitute the given values into the formula as shown:
\(4=\frac{100}{n-1}\\4(n-1)=100\
-1=\frac{100}{4}\
-1=25\
=25+1\
=26\)
This shows that there are 26 scores in the population.
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