diff --git a/intro-experimental-design-hypothesis-testing/IntroStatsExpDesignHT_011723_day1.pdf b/intro-experimental-design-hypothesis-testing/IntroStatsExpDesignHT_011723_day1.pdf
index 71b89f7..88ff6fe 100644
Binary files a/intro-experimental-design-hypothesis-testing/IntroStatsExpDesignHT_011723_day1.pdf and b/intro-experimental-design-hypothesis-testing/IntroStatsExpDesignHT_011723_day1.pdf differ
diff --git a/intro-experimental-design-hypothesis-testing/IntroStatsExpDesignHT_011723_day1.pptx b/intro-experimental-design-hypothesis-testing/IntroStatsExpDesignHT_011723_day1.pptx
index 63e3f6d..2aded2c 100644
Binary files a/intro-experimental-design-hypothesis-testing/IntroStatsExpDesignHT_011723_day1.pptx and b/intro-experimental-design-hypothesis-testing/IntroStatsExpDesignHT_011723_day1.pptx differ