Ackerman and Goldsmith (2011) found that students who studied text from printed hardcopy had better test scores
Question:
For the final exam, the overall average for the entire class was µ = 81.7, but the n = 9 students who used e-books had a mean of µ = 77.2 with a standard deviation of σ = 5.7.
a. Is the sample sufficient to conclude that scores for students using e-books were significantly different from scores for the regular class? Use a two-tailed test with a = .05.
b. Construct the 90% confidence interval to estimate the mean exam score if the entire population used e-books.
c. Write a sentence demonstrating how the results from the hypothesis test and the confidence interval would appear in a research report.
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Related Book For
Essentials Of Statistics For The Behavioral Sciences
ISBN: 9781133956570
8th Edition
Authors: Frederick J Gravetter, Larry B. Wallnau
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