Ackerman and Goldsmith (2011) found that students who studied text from printed hard copy had better test scores than students who studied from 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 m= 81.7 but the n= 9 students who used e-books had a mean of M = 77.2 with a standard deviation of s = 5.7.

a. Using a two-tailed test with alpha = .05. can you please explain me if the sample is sufficient to conclude that scores for students using e-books were significantly different from scores for the regular class?

b. How to Construct the 90% confidence interval to estimate the mean exam score if the entire population used e-books. ?

c. In a sentence how can I demonstrate how the results from the hypothesis test and the confidence interval would appear in a research report.

Can you please solve this step by step?