A few small changes on case 1.

cases/case_1/case_1_description.md

@@ -79,8 +79,8 @@ Elisa is calling you because 2021 was a terrible year for the warehouse. The
 year was a chaotic one, and Elisa's team was not able to run operations
 smoothly. Although Elisa is not providing exact numbers, she is very well aware
 that the warehouse stock was unnecessarily high at times, and that there were
-too many periods where the warehouse was out of stock and clients had to wait to
-get their goods.
+too many periods where the warehouse was out of stock and clients had to wait
+to get their goods.
 
 Elisa thinks that the main reason for this is the lack of a clear policy for
 when to order and how much to order from Diemen. Her team decides independently
@@ -109,10 +109,11 @@ SimiUPF will be mad at you...
   different levels. This report should be directed towards Elisa, should give
   her clear recommendations and should justify these recommendations.
 - Each level is worth 2 points out of a total of 10. The 2 missing points will
-  grade the clearness and structure of your report.
-- You need to use Python notebooks to solve all levels. A helper notebook is
-  provided. For each level, please attach a notebook that shows your
+  grade the clarity and structure of your report and code.
+- You need to use a Python notebook to solve all levels. A helper notebook is
+  provided. Please attach a notebook that shows your
   solution/proposal/analysis.
+- Include your team number, names and student IDs in all your deliverables.
 
 ## Data
 
@@ -162,7 +163,7 @@ warehouse. The instructions on how to use the code are in the notebook itself.
       with the policy you are proposing. Remember, you need to convince Elisa
       that this is better than what happens today.
     - As a specific constraint, Elisa explains that she wants that the
-      probability of a stockout is at most of 5%.
+      probability of a stockout to be at most of 5% on any given day.
     -
 - Level 3
     - Right after you finished designing your policy for level 2, Elisa called
@@ -173,7 +174,7 @@ warehouse. The instructions on how to use the code are in the notebook itself.
       not less than that.
     - Elisa wants you to take this into account. Does it affect the policy you
       proposed for level 2? If so, you need to come up with a new one that
-      adapts to this rule.
+      adapts to this rule and compare it to the previous one.
 - Level 4
     - Elisa briefly discussed with you in one meeting that there is an option
       to come to an agreement with the team in Diemen to improve the lead time