A academic tutor wants to assess whether her remedial tutoring has been effective for her five students. She decides to conduct a related samplest-test and records the following grades for students prior to and after receiving her tutoring.

Tutoring Before: 2.6, 2.7, 3.2, 3.1, 2.9

Tutoring After: 3.3, 3.1, 3.7, 3.4, 3.7

(a) Test whether or not her tutoring is effective at a 0.05 level of significance. State the value of the test statistic. (Round your answer to three decimal places.)

t=

(b) Compute effect size using estimated Cohen'sd. (Round your answer to two decimal places.)

d=