Inferential statistics: List the null hypothesis of the study, and fill in the table for the t-test results. Complete the problems assigned by your instructor - tables for four problems have been provided. Problem #: 1 H( little 0) table: t-statistic: p-value: Do you reject the H(little 0) ?:

Problem #1: Effects of supplemental activities on reading ability Abstract: An educator conducted an experiment to test whether new directed reading activities in the classroom will help elementary school pupils improve some aspects of their reading ability. She arranged for a third grade class of 21 students to follow these activities for an 8-week period. A control classroom of 23 third graders followed the same curriculum without the activities. At the end of the 8 weeks, all students took a Degree of Reading Power (DRP) test, which measures the aspects of reading ability that the treatment is designed to improve. Reference: Moore, David S., and George P. McCabe (1989). Introduction to the Practice of Statistics. Original source: Schmitt, Maribeth C. (1987), The Effects on an Elaborated Directed Reading Activity on the Metacomprehension Skills of Third Graders, Ph.D. dissertation, Purdue University. Variable Names: Treatment: Whether student participated in activities (treated) or not (control) Response: Score on Degree of Reading Power test Data and descriptions obtained from The Data and Story Library of Carnegie-Mellon University. Treated 24 Control 42 Treated I 43 I Control I 43 Treated I 58 I Control I 55 Treated 71 Control 26 Treated I 43 I Control I 62 Treated 49 Control 37 Treated I 61 I Control I 33 Treated I 44 I Control I 41 Treated 67 Control 1 9 Treated I 49 I Control I 54 Treated I 53 I Control I 20 Treated 56 Control 85 Treated I 59 I Control I 46 Treated 52 Control 1 0 Treated 62 Control 1 7 Treated Control Treated Control Treated Control Treated Control Treated Control Treated Control Control Control