Answer: The size of sample is 50
Step-by-step explanation:
Since we have given that
Variance of a sample was reported = 144
Variance of population was reported = 7200
Let the sample size be 'n'.
As we know the formula for "Variance of a sample":
[tex]V(X)=\frac{\sigma^2}{n}\\\\144=\frac{7200}{n}\\\\n=\frac{7200}{144}\\\\n=50[/tex]
Hence, the size of sample is 50.
