diff --git a/01_intro/powersim-intro.pdf b/01_intro/powersim-intro.pdf
index bb2ddc4..8ba055e 100644
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diff --git a/03_anova/powersim-anova.R b/03_anova/powersim-anova.R
index 215aa01..a626638 100644
--- a/03_anova/powersim-anova.R
+++ b/03_anova/powersim-anova.R
@@ -52,7 +52,7 @@ text(1.5, 38 + (30 + 12)/2, "Fertilizer B: high", srt = 32, col = "darkgray")
 #' 
 #' Hypothesis
 #' 
-#' - H$_0^{AB}\colon~ (\alpha\beta)_{ij} = 0 \text{ for all } i,j$
+#' - $H_0^{AB}\colon~ (\alpha\beta)_{ij} = 0 \text{ for all } i,j$
 #' 
 
 #' ## Setup
diff --git a/03_anova/powersim-anova.md b/03_anova/powersim-anova.md
index e518c24..a2594ef 100644
--- a/03_anova/powersim-anova.md
+++ b/03_anova/powersim-anova.md
@@ -24,7 +24,7 @@ Assumptions
 
 Hypothesis
 
-- H$_0^{AB}\colon~ (\alpha\beta)_{ij} = 0 \text{ for all } i,j$
+- $H_0^{AB}\colon~ (\alpha\beta)_{ij} = 0 \text{ for all } i,j$
 
 ## Setup
 
diff --git a/04_ancova/intro-ancova.pdf b/04_ancova/intro-ancova.pdf
index c8581d8..dfedb69 100644
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diff --git a/05_mixed1/intro-lmm.pdf b/05_mixed1/intro-lmm.pdf
index ba7cf61..d1ce4c3 100644
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diff --git a/06_mixed2/intro-datsimlmm.pdf b/06_mixed2/intro-datsimlmm.pdf
index ba3dd91..77e0691 100644
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