A statistics tutor wants to assess whether her remedial tutoring has been effect

Question

A statistics tutor wants to assess whether her remedial tutoring has been effective for her five students. She decides to conduct a related samples t-test and records the following grades for students prior to and after receiving her tutoring. Test whether or not her tutoring is effective at a 0.05 level of significance. State the value of the test statistic. () t = State the decision to retain or reject the null hypothesis. Retain the null hypothesis. Reject the null hypothesis. Compute effect size using estimated Cohen's d. () d =

Explanation / Answer

Using Minitab :

Paired T-Test and CI: Before, After

Paired T for Before - After

N Mean StDev SE Mean
Before 5 2.700 0.255 0.114
After 5 3.220 0.277 0.124
Difference 5 -0.5200 0.1924 0.0860

95% CI for mean difference: (-0.7588, -0.2812)
T-Test of mean difference = 0 (vs 0): T-Value = -6.04 P-Value = 0.004

Please put answe -6.04 in part a and check.

Effect size (Cohen's d):   1.9532

Hope this will helpful you. Thans and God Bless you :)

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