Ackerman & Goldsmith XXXXXXXXXXfound that students who studied text from printed hard copy had better test scores than students who studied text presented on a screen. In a related study, a professor...

Ackerman & Goldsmith (2011) found that students who studied text from printed
hard copy had better test scores than students who studied text presented on a
screen. In a related study, a professor noticed that several students in a large class
had purchased the e-book version of the course textbook. For the final exam, the
overall average for the entire class was µ = 85, but the n = 10 students who
purchased the e-book had a mean of M = 77 with a standard deviation of s = 7. Do
these data indicate a significant decrease in test scores on the final exam due to the
use of a e-book? Use a one-tailed test with α = .05.