Question
In: Statistics and Probability
4.166 Print vs E-booksSuppose you want to find out if reading speed is any difference between...
4.166
Print vs E-booksSuppose you want to find out if reading speed is any difference between a print book and an e-book.
(a) Clearly describe how you might set up an experiment to test this. Give details.
(b) Why is a hypothesis test valuable here? What additional information does a hypothesis test give us beyond the descriptive statistics we discuss in Chapter 2?
(c) Why is a confidence interval valuable here? What additional information does a confidence interval give us beyond the descriptive statistics of Chapter 2 and the results of a hypothesis test described in part (b)?
(d) A similar study53 has been
conducted, and reports that “the difference between Kindle and the
book was significant at the p < .01 level, and the difference
between the iPad and the book was marginally significant at p =
.06.” The report also stated that “the iPad measured at 6.2% slower
reading speed than the printed book, whereas the Kindle measured at
10.7% slower than print. However, the difference between the two
devices [iPad and Kindle] was not statistically significant because
of the data's fairly high variability.” Can you tell from the first
quotation which method of reading (print or e-book) was faster in
the sample or do you need the second quotation for that? Explain
the results in your own words.
Solutions
orchestra answered 2 years agoRelated Solutions
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