diff --git a/manuscript/06_common.md b/manuscript/06_common.md
index 67dbbb4..59b97a6 100644
--- a/manuscript/06_common.md
+++ b/manuscript/06_common.md
@@ -331,7 +331,7 @@ be the point so that only 5% of averages of 50 days of web traffic have more hit
 7. You don't believe that your friend can discern good wine from cheap. Assuming
 that you're right, in a blind test where you randomize 6 paired varieties (Merlot,
 Chianti, ...) of cheap and expensive wines.
-What is the change that she gets 5 or 6 right? [Watch a video solution](https://www.youtube.com/watch?v=ILm2OUl6p_w&index=14&list=PLpl-gQkQivXhHOcVeU3bSJg78zaDYbP9L) and [see the original problem](http://bcaffo.github.io/courses/06_StatisticalInference/homework/hw2.html#8).
+What is the chance that she gets 5 or 6 right? [Watch a video solution](https://www.youtube.com/watch?v=ILm2OUl6p_w&index=14&list=PLpl-gQkQivXhHOcVeU3bSJg78zaDYbP9L) and [see the original problem](http://bcaffo.github.io/courses/06_StatisticalInference/homework/hw2.html#8).
 8.  The number of web hits to a site is Poisson with mean 16.5 per day.
 What is the probability of getting 20 or fewer in 2 days? [Watch a video solution](https://www.youtube.com/watch?v=PMPFbwtpp1k&index=18&list=PLpl-gQkQivXhHOcVeU3bSJg78zaDYbP9L)
 and [see a written solution](http://bcaffo.github.io/courses/06_StatisticalInference/homework/hw2.html#12).