Ackerman and Goldsmith (2011) found that students who studied text from printed hardcopy had better test scores than students who studied  text presented on the 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= 81.7, but the  sample of n = 9 students who used e-books had a mean of M = 77.2 with ((SS =392) Is the sample sufficient to conclude that scores for students using e-books were sufficiently different from scores for the regular class? Use a two-tail test with α=

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Ackerman and Goldsmith (2011) found that students who studied text from printed hardcopy had better test scores than students who studied  text presented on the 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= 81.7, but the  sample of n = 9 students who used e-books had a mean of M = 77.2 with ((SS =392)

Is the sample sufficient to conclude that scores for students using e-books were sufficiently different from scores for the regular class? Use a two-tail test with α= .01.(not .05).

Please answer the question using all of the steps presented  on your practice problem assignment.  (null in word, alternative in words, null in symbols, alternative in symbols, critical region t,  df,  all steps in the analysis computing your computed t, make a decision, and give a conclusion. 

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