Use the t table to determine the following t values:
a. 99% of the values in a t distribution with 18 degrees of freedom will be less than or equal to ______.
b. 1% of the values in a t distribution with 10 degrees of freedom will be greater than ______.
c. 95% of the values in a t distribution with 14 degrees of freedom will be in the interval – ___ to + ___ around the center of the distribution.