Ackerman and Goldsmite found that students who studed tesxt from printed hardcopy 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 exm, the overall average for the entire class was μ = 81.7 but the n = 9 students who used e-books had a mean of M = 72.2 with a standard deviation of s = 5.7 a. is the sample sufficient to condluce that scores for students using e-books were significantly different from scores for the regular class? use a two-tailed test with alpha = .05 b. Construct the 90% confidence interval to estimate the mean exam score if the entire population used e-books
Ackerman and Goldsmite found that students who studed tesxt from printed hardcopy 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 exm, the overall average for the entire class was μ = 81.7 but the n = 9 students who used e-books had a
a. is the sample sufficient to condluce that scores for students using e-books were significantly different from scores for the regular class? use a two-tailed test with alpha = .05
b. Construct the 90% confidence
Given
M=72.2, s=5.7 , n=9, population mean μ=81.7
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Solved in 3 steps
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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