The single-sample t ratio is used to compare a. two population ...

[justinmsk]

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

[fwbard]

Answer to Question 1

b

Answer to Question 2

a

[justinmsk]

Thanks for the timely response, appreciate it

[ricroger]

Excellent