document.write( "Question 1070392: 1. A researcher would like to compare the effectiveness of video versus reading for communicating information to adolescents. A sample of n1= 10 adolescents is given a pamphlet explaining nuclear energy and told that they will be tested on the information. A separate sample of n2= 10 adolescents is shown a video that contains the same information presented in a fast-paced visual form and told that they will be tested. One week later all 20 subjects are given a test on nuclear energy. The average score for the pamphlet group was sample mean 1= 51 with s 12= 16. The video group averaged sample mean2= 46 with s 22= 20. Conduct a t-Test (two-tail, α = .05) for two Independent groups to see if there is a significant difference between the two groups (follow the Handout).
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Algebra.Com's Answer #685485 by Boreal(15235) $\"\"$ $\"About$

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mu1=51
\n" ); document.write( "mu2=46
\n" ); document.write( "s1^2=16
\n" ); document.write( "s2^2=20
\n" ); document.write( "n1=n2=10
\n" ); document.write( "Do a 2-sample t
\n" ); document.write( "hypothesize means =
\n" ); document.write( "alpha=0.05
\n" ); document.write( "test stat t d=18 0.975
\n" ); document.write( "critical value |t|>2.101
\n" ); document.write( "t df (18)=(mu1-mu2)/sqrt ((s1^2/n1)+(s2^2/n2))
\n" ); document.write( "=5/sqrt [(16/10)+(20/10)]
\n" ); document.write( "=5/sqrt (3.6)
\n" ); document.write( "=2.635
\n" ); document.write( "This is greater than the critical value of 2.101.
\n" ); document.write( "Reject Ho and there is significant difference that the two means are different. \n" ); document.write( "

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