The ________ is a statistic that assumes that the variable has a symmetric bell-shaped distribution and the mean is known (or assumed to be known)and the population variance is estimated from the sample.
A)statistic
B)t statistic
C)z statistic
D)none of the above

Question

Quizplus · Accepted Answer

The t statistic is used when the population variance is unknown and is estimated from the sample, especially in cases where the sample size is small (typically less than 30). It is designed for situations with a symmetric bell-shaped distribution and when the mean is known or assumed to be known.

The ________ Is a Statistic That Assumes That the Variable