diff --git a/intro-experimental-design-hypothesis-testing/IntroStatsExpDesignHT_011723_day2.pdf b/intro-experimental-design-hypothesis-testing/IntroStatsExpDesignHT_011723_day2.pdf
new file mode 100644
index 0000000..2bc077b
Binary files /dev/null and b/intro-experimental-design-hypothesis-testing/IntroStatsExpDesignHT_011723_day2.pdf differ