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--- c:mrm:2026:schedule [2026/04/06 03:01] – [Week 6: Research] hkimscil
+++ c:mrm:2026:schedule [2026/04/12 09:54] (current) – [Week 7] hkimscil
@@ Line 469: / Line 469: @@
 ----
 <WRAP half column>
+[[:sampling]]
+  * population -- parameter
+  * sample -- (sample) statistics
+  * inferential statistics
+  * (확률과 통계시간)
+  * probability vs. non-probability sampling
+  * sample frame
+  * sampling -- equal chance of being selected
+  * [[:r:sampling distribution]] simulation in R
+  * [[:hypothesis testing]]
+    * building a (research) hypothesis (media content for playing game will reduce the game playing time for high school students).
+    * null hypothesis
+    * z-score location (or probability at that location)
+    * reject the null hypothesis
+      * since we rejected the null, we take (accept) the research hypothesis
+    * or fail to reject
+      * since we fail to reject, we accept the null hypothesis
+  * Hypothesis
+    * H1: There will be a difference in spending time in playing games between the high school students who take the media education content that we create and maintain and the students who do not.
+    * HO: There will be no difference in spending time in playing games between the high school students who take the media education that we create and manage and the student who do not.
+    * Situation 1. 고등학교 학생들의 게임에 쓰는 시간과 표준편차를 알고 있을 때 (하루 평균 160분 표준편차 40)
+    * S2. 고등학교 학생들의 (모집단의) 게임에 쓰는 시간만 알고 있을 때 (하루 평균 160분)
+    * S3. 모집단의 파라미터를 전혀 모를 때 (na = nb = 50)
+    * S4. 교육의 효과를 알고 싶은 데, 샘플 리쿠르트 자원이 부족할 때 (n=50)
+  * [[:t-test]]
 주차 온라인 수업내용
@@ Line 532: / Line 559: @@
 ===== Week 7 =====
-  * [[w07 note]]
 ----
 <WRAP half column>
+  * [[./schedule/w07 note]]: hypothesis testing via t-test