This data set contains the achievement test (English as a Second Language) results and some background data collected during experimental trial of a new ESL program. The study was one year in duration. Students were allocated to the experimental ESL program class and a regular program control class on a random basis. Vocabulary and grammar tests were administered to the students in both groups at the beginning and the end of the school year.VariablesThe dataset includes 24 cases and 7 variables:Student IDGroup (1 - experimental, 2 - control, 9 - missing)Gender (1 - male, 2 - female, 9 - missing)Pre-test vocabulary scores (scores range from 0 - 25, 99 - missing)Pre-test grammar scores (scores range from 0 - 25, 99 - missing)Post-test vocabulary scores (scores range from 0 - 25, 99 - missing)Post-test grammar scores (scores range from 0 - 25, 99 - missing)(a) develop a research question that can be addressed with independent-samples t test(b) state the null and alternative hypotheses (in words)(c) state the alpha level(d) run the analysis(e) provide interpretation of results (including checks for assumptions and effect size) following APA format.

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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This data set contains the achievement test (English as a Second Language) results and some background data collected during experimental trial of a new ESL program. The study was one year in duration. Students were allocated to the experimental ESL program class and a regular program control class on a random basis. Vocabulary and grammar tests were administered to the students in both groups at the beginning and the end of the school year.

Variables

The dataset includes 24 cases and 7 variables:

Student ID
Group (1 - experimental, 2 - control, 9 - missing)
Gender (1 - male, 2 - female, 9 - missing)
Pre-test vocabulary scores (scores range from 0 - 25, 99 - missing)
Pre-test grammar scores (scores range from 0 - 25, 99 - missing)
Post-test vocabulary scores (scores range from 0 - 25, 99 - missing)
Post-test grammar scores (scores range from 0 - 25, 99 - missing)

(a) develop a research question that can be addressed with independent-samples t test

(b) state the null and alternative hypotheses (in words)

(d) run the analysis

(e) provide interpretation of results (including checks for assumptions and effect size) following APA format.

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