A random sample of size 20 taken from a normally distributed population resulted in a sample variance of 32. The lower limit of a 90% confidence interval for the population variance would be:

A) 52.185
B) 20.375
C) 20.170
D) 54.931
E) 29.655

Population Variance

A measure of the dispersion or spread of a population dataset, calculated as the average of the squared differences from the population mean.

Confidence Interval

A range of values derived from sample data that is likely to contain the value of an unknown population parameter.

Sample Variance

A measure of variability or spread in a sample dataset, indicating how much the individual sample points deviate from the sample mean.