Question

/POSTBOC-SCHEFEE ALPHA (0.05) Oneway Descriptives anciety associated with asking for help during a statistics course 95% confidence interval for Mean Mean Std. Deviaton Std Error Lower Bound Upper Bound Minimum Maximum 5.00 1.50 30 28583 30 2.2140 8 or more courses 30 226939670576 90 2.4472 3.2602 2.8304 2.23042.6640 2 4565 8536 1.9082 0761619648 0-2 courses 3-7 courses 2.5744 1.00 400 96512 17621 9670517656 100 1.00 4.00 5.00 5.00 10912 ANOVA anuiety associated with asking for help during a statistics course Sum of dr Sig. Beteeen Oroups whin Groups 7651 87.718 95 370 Mean Square 3.826 1008 3.794 026 87 otal 89 mPost Hoc Tests Multiple Comparisons Dependent Variable aniety associated with asking for help during a statistics course Schete Mean 95% confidence interval 0 number of onine ourses completed J) number of online courses complesed 3-7 courses 8 or more courses 0-2 courses 8 or more courses Std. ErrorSig Lower Bound Upper Bound 2900 1.2347 0014 5904 0567 0-2 courses 443325926 58900 25926 051 082 051 977 082 977 0014 0567 12900 7010 1.2347 5904 3-7 courses 64433 259 0553325926 5890025926 05533 25926 3-7 Courses Homogeneous Subsets anxiety associated with asking for help

1. Write an null hypothesis for this analysis.

2. What is the observed or computed value of the statistics comparing the asking for help set up scale scores based on the number of online courses completed?

3. Based on the results of the Scheffe post hoc test, which groups are significantly different.

4. Present the results as they might appear an article. This must include a table that reports the results of the analysis and narrative statement that reports and interpret the results of the analysis and Scheffe post hoc test.

Answer 1

$Group~1:~0-2~course,~\mu_1=population~mean~of~Group~1\\ Group~2:~3-7~courses,~\mu_2=population~mean~of~Group~2\\ Group~3:~8~0r~more~courses,~\mu_3=population~mean~of~Group~3\\ 1.~Here~we~want~to~test~H_0:~\mu_1=\mu_2=\mu_3~vs.~H_1:~at~least~one~\mu_i's~different~from~others\\ 2.~Observed~F-statistic=3.794\\ Since~p-value=0.026<0.05,~we~reject~H_0~at~level~0.05~and~conclude~that\\ at~least~mean~of~one~group~is~significantly~different~from~others.\\ 3.~Since~we~reject~H_0~at~level~0.05,~we~use~~post-hoc~test~to~find~which\\ difference/s~is/are~significantly~different~from~others.~For~this,~we~use~Scheffe~post-hoc~test.\\ Since~C.I.~of~(group~1-group~2)~does~not~contain~zero,~hence~Group~1~and\\ Group~2~are~significantly~different~from~each~other.\\ 4.~From~above~discussion,~we~conclude~that~0-2~courses~and~3-7~courses~are\\ significantly~different~from~each~other~though~the~p-value=0.051~is~slightly\\ higher~than~0.05.~Moreover~for~testing~elementary ~treatment~contrasts~or~pairwise\\$

$it~is~better~to~use~Tukey's~HSD~than~Scheffe~post~hoc~test~because\\ Scheffe~post-hoc~test~gives~good~result~for~any~contrasts~i.e.~it~includes~all\\contrasts. ~However,~tukey's~HSD~includes~only~elementary~contrasts.$