A sample of n sludge specimens is selected and the pH
of each one is determined. The one-sample t test will
then be used to see if there is compelling evidence for
concluding that true average pH is less than 7.0. What
conclusion is appropriate in each of the following
situations?
a. n = 6, t = 22.3, a = .05
b. n = 15, t = 23.1, a = .01
c. n = 12, t = 21.3, a = .05
d. n = 6, t = .7, a = .05
e. n = 6, x = 6.68, s/\sqrt{n}= .0820