The t distribution was invented to handle
A) confidence intervals with more than 99 percent confidence
B) very large samples
C) not knowing the value of $\sigma$
D) common arithmetic errors.

Question

Quizplus · Accepted Answer

The t distribution was invented by William Sealy Gosset for use in situations where the population standard deviation is unknown and the sample size is small. It allows for the estimation of the mean of a normally distributed population in situations where the sample size is small and the population standard deviation is unknown, hence option C is correct.

The T Distribution Was Invented to Handle A) Confidence Intervals σ\sigmaσ

The T Distribution Was Invented to Handle
A) Confidence Intervals $\sigma$