With a one-sample t test, the value of t is

With a one-sample t test, the value of t is
 
  a. always positive.
  b. positive if the sample mean is too small.
  c. negative whenever the sample standard deviation is negative.
  d. positive if the sample mean is larger than the hypothesized population mean.

Question 2

For a t test with one sample we
 
  a. lose one degree of freedom because we have a sample.
  b. lose one degree of freedom because we estimate the population mean.
  c. lose two degrees of freedom because of the mean and the standard deviation.
  d. have N degrees of freedom.

Question 3

The sampling distribution of the variance is
 
  a. positively skewed.
  b. negatively skewed.
  c. normal.
  d. rectangular.