Author Question: The single-sample t ratio is used to compare a. two population means b. a sample mean with an ... (Read 99 times)

justinmsk · **on:** Jun 20, 2018

The single-sample t ratio is used to compare

a. two population means
b. a sample mean with an assumed or known population mean
c. two sample means
d. a single sample's mean with that same sample's standard deviation

Question 2

When the standard deviation of the Y distribution equals zero, then

a. the slope of the regression line of Y on X equals zero
b. the mean of X equals zero
c. the mean of Y equals zero
d. none of these