Does familiarity with an assessment increase test scores? You hypothesize that it does. You identify 11 fifth-grade students to take a writing assessment that they had not experienced before. Six of these students are selected at random and, before taking the assessment, are provided with a general overview of its rationale, length, question format, and so on. The remaining five students are not given this overview. The following are the scores (number of points) for students in each group:
overview provided : 20 18 14 22 16 16
no overview provided : 11 15 16 13 9
(a) Set up H0 and H1.
(b) Perform the test (α = 01).
(c) Draw your final conclusions.