and the pen and paper group (n = 12) had a mean verbatim score of 9.8 (SS = 925). Do these data indicate a significant difference between the two groups in terms of note taking? a. State the null and alternative hypotheses using the appropriate symbols. State whether the test is one- or two-tailed. b. Identify the degrees of
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). Do these data indicate a significant difference between the two groups in terms of note taking?
a. State the null and alternative hypotheses using the appropriate symbols. State whether the test is one- or two-tailed.
b. Identify the degrees of freedom (df) and the critical value(s) at an alpha = 0.05.
We have given that
Sample sizes n1= 15 , n2=12
Sample means xbar1= 16.2 , xbar2 = 9.8
SS= 1000 , SS=925
level of significance =alpha =0.05
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