Where is the F-distribution used?

OPTIONS

• To model discrete data when the population size is small compared to the sample size
• To make decisions and construct confidence intervals by summing the square of normal random variables
• To test for equality of variances from two normal populations
• To compensate for error in the estimated standard deviation for a small sample size

ANSWER

To test for equality of variances from two normal populations

EXPLANATION

Answer A aligns with the geometric and hypergeometric distributions. Answer D is partial explanation of the T-Distribution. Answer B is one description of the chi-square distribution.