Development of a variety of teaching and learning activity sets about statistical hypothesis testing

The objectives of this research are to develop a set of diverse instructional activities as well as to compare students' learning achievement before and after participating in the diverse instructional activities on statistical hypothesis testing for first-year students in the Faculty of Business Administration at Chitralada Technology Institute. The Pre-Experimental Design research methodology, specifically the One-Shot Case Study, was employed, involving the first-year students who enrolled in the Business Statistics course during the second semester of the 2023 academic year. The research tools comprised of an instructional activity set containing worksheets, group activities, and Quizizz online application, learning outcome evaluation form, critical thinking assessment, and students’ satisfaction questionnaire using 5level Likert scale rating. Content validity was established through expert reviews, whereas reliability was determined using the IOC (Index of Item Objective Congruence) coefficient. Initial data analysis involved calculating the mean and standard deviation. And finally, a t-test was applied to compare pre- and post-activity scores. The research findings revealed that all instructional sets were validated by three experts, with an IOC value of 1, indicating strong alignment between the questions and the objectives. The results from the comparison of the students’ achievement before and after engaging in the instructional activity set by Quizizz showed that the students got 2.06s ±1.886 before the activity and $5.21 \mathrm{~s} \pm 1.596$ after the activity, which was statistically significant at a 95% confidence level (${p} \leqslant 0.05$). As the students’ outcome evaluation, they got $4.88 \mathrm{~s} \pm 3.248$ before the activity and ${1 3. 6 4 s} \boldsymbol{\pm} {2. 1 9 1}$ after the activity. It is evident that after the students completed both activity sets, their academic achievement was higher than that before using the activity sets and was statistically significant at a 95% confidence level ($\mathrm{p} \leqslant 0.05$).