document.write( "Question 363910: Two independent groups, each of 10 children, were tested in general knowledge. Test scores were as follows:\r
\n" ); document.write( "\n" ); document.write( "Group A 7 7 6 7 9 6 8 6 6 10
\n" ); document.write( "Group B 6 6 4 7 8 6 6 5 6 8\r
\n" ); document.write( "\n" ); document.write( "Is the difference between mean scores of the two groups significant? Use 5% level of significance.
\n" ); document.write( " \n" ); document.write( "
Algebra.Com's Answer #259558 by SadieKhan(31)\"\" \"About 
You can put this solution on YOUR website!
A B
\n" ); document.write( "7 6
\n" ); document.write( "7 6
\n" ); document.write( "6 4
\n" ); document.write( "7 7
\n" ); document.write( "9 8
\n" ); document.write( "6 6
\n" ); document.write( "8 6
\n" ); document.write( "6 5
\n" ); document.write( "6 6
\n" ); document.write( "10 8\r
\n" ); document.write( "\n" ); document.write( "H0: There is no difference between two groups
\n" ); document.write( "H1: There is a difference between two groups
\n" ); document.write( "Using mega stat\r
\n" ); document.write( "\n" ); document.write( "Hypothesis Test: Independent Groups (t-test, pooled variance)
\n" ); document.write( "
\n" ); document.write( " Group 1 Group 2
\n" ); document.write( " 7.20 6.20 mean
\n" ); document.write( " 1.40 1.23 std. dev.
\n" ); document.write( " 10 10 n
\n" ); document.write( "
\n" ); document.write( " 18 df
\n" ); document.write( " 1.000 difference (Group 1 - Group 2)
\n" ); document.write( " 1.733 pooled variance
\n" ); document.write( " 1.317 pooled std. dev.
\n" ); document.write( " 0.589 standard error of difference
\n" ); document.write( " 0 hypothesized difference
\n" ); document.write( "
\n" ); document.write( " 1.70 t
\n" ); document.write( " .1066 p-value (two-tailed)\r
\n" ); document.write( "\n" ); document.write( "As P value is greater than 0.05, we fail to reject Ho and conclude that there is no difference between two groups \n" ); document.write( "
\n" );