Chapter 8: Q9CQQ (page 356)
Robust Explain what is meant by the statements that the t test for a claim about\(\mu \)is robust, but the\({\chi ^2}\)test for a claim about\({\sigma ^2}\)is not robust.
Short Answer
The meaning of the given statement is that the t distribution gives accurate results about the hypothesis test even if the population is not strictly normally distributed. On the other hand, the chi-square distribution does not produce accurate result if the considered population is not strictly normally distributed.