A random variable that may take on any value in an interval or collection of intervals is known as a
a. continuous random variable.
b. discrete random variable.
c. mixed type random variable.
d. multivariate random variable.
Question 2
To compute an interval estimate for the difference between the means of two populations, the t distribution
a. is restricted to small sample situations.
b. is not restricted to small sample situations.
c. can be applied when the populations have equal means.
d. can be applied only when the populations have equal standard deviations.
