Researchers explored whether there were qualitative differences between students who were randomly assigned to take notes using pen and paper compared to students taking notes on a laptop (Mueller & Oppenheimer, 2014). They predicted that students who took notes using pen and paper would be more likely to put concepts into their own words and would produce less verbatim notes than the laptop group. The laptop group (n = 15) had a mean verbatim score of 16.2 (SS = 1000) and the pen and paper group (n = 12) had a mean verbatim score of 9.8 (SS = 925). Df=25. T-critical value= 2.0595. Do these data indicate a significant difference between the two groups in terms of note taking? a. Compute the independent-samples test statistic. Show all work and formulas and circle your calculated test statistic. Round to two decimal places at each step. b. State your decision regarding the null hypothesis.
Researchers explored whether there were qualitative differences between
students who were randomly assigned to take notes using pen and paper compared to students taking notes on a laptop (Mueller & Oppenheimer, 2014). They predicted that students who took notes using pen and paper would be more likely to put concepts into their own words and would produce less verbatim notes than the laptop group. The laptop group (n = 15) had a mean verbatim score of 16.2 (SS = 1000) and the pen and paper group (n = 12) had a mean verbatim score of 9.8 (SS = 925). Df=25. T-critical value= 2.0595. Do these data indicate a significant difference between the two groups in terms of note taking?
a. Compute the independent-samples test statistic. Show all work and formulas and circle your calculated test statistic. Round to two decimal places at each step.
b. State your decision regarding the null hypothesis.
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