To Compute a One-Sample T Test,a Researcher Has to Know

Multiple Choice

To compute a one-sample t test,a researcher has to know many values.Which of the following is NOT a value that the researcher must know to compute this test?

A) The estimated standard error must be known.
B) The population variance must be known.
C) The sample size must be known.
D) The sample mean and sample variance must be known.